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JavaScript的方法

以下的一些"方法"可用在JavaScript:

  • abs
  • acos
  • alert
  • anchor
  • asin
  • assign
  • atan
  • back
  • big
  • blink
  • blur
  • bold
  • ceil
  • charAt
  • clear
  • clearTimeout
  • click
  • close
  • confirm
  • cos
  • eval
  • exp
  • fixed
  • floor
  • focus
  • fontcolor
  • fontsize
  • forward
  • getDate
  • getDay
  • getHours
  • getMinutes
  • getMonth
  • getSeconds
  • getTime
  • getTimeZoneoffset
  • getYear
  • go
  • indexOf
  • italics
  • lastIndexOf
  • link
  • log
  • max
  • min
  • open
  • parse
  • pow
  • prompt
  • random
  • round
  • select
  • setDate
  • setHours
  • setMinutes
  • setMonth
  • setSeconds
  • setTimeout
  • setTime
  • setYear
  • sin
  • small
  • sqrt
  • strike
  • sub
  • submit
  • substring
  • sup
  • tan
  • toGMTString
  • toLocaleString
  • toLowerCase
  • toString
  • toUpperCase
  • UTC
  • write
  • writeln

  • abs method

    Returns the absolute value of its argument.

    Syntax

    abs(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.


    acos method

    Returns the arc cosine (in radians) of its argument.

    Syntax

    acos(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • asin, atan, cos, sin, tan methods

    alert method

    Displays an Alert dialog box with a message and an OK button.

    Syntax

    alert("message")

    The argument message is any string.

    Description

    Use the alert method to display a message that does not require a user decision. The message argument specifies a message that the dialog box contains.

    Applies to

    window

    Examples

    In the following example, the testValue function checks the name entered by a user in the text element of a form to make sure that it is no more than eight characters in length. This example uses the alert method to prompt the user of an application to enter a valid value.

    function testValue(textElement) {
       if (textElement.length > 8) {
          alert("Please enter a name that is 8 characters or less")
       }
    }
    You can call the testValue function in the onBlur event handler of a form's text element, as shown in the following example:
    Name: <INPUT TYPE="text" NAME="userName" onBlur="testValue(userName)">

    See also

  • confirm, prompt methods

    anchor method

    Causes the calling string object to be a named anchor by surrounding it with HTML anchor tags, <A NAME=...> </A>.

    Syntax

    string.anchor(name)

    The argument name can be any string.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • link method

    asin method

    Returns the arc sine (in radians) of its argument.

    Syntax

    asin(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • acos, atan, cos, sin, tan methods

    assign method

    Sets location.href so you don't have to type ".href" complements toString().

    Syntax

    assign()

    Description

    Do not call the assign method. It exists so you can use 'location=...' instead of 'location.href=...'. xxx Description to be supplied.

    Applies to

    location

    Examples

    xxx Examples to be supplied.


    atan method

    Returns the arc tangent (in radians) of its argument.

    Syntax

    atan(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • acos, asin, cos, sin, tan methods

    back method

    Loads the previous URL in the history list.

    Syntax

    back()

    Description

    This method performs the same action as a user choosing the Back button in the Navigator. The back method is the same as go(-1).

    Applies to

    history

    Examples

    xxx Examples to be supplied.

    See also

  • forward, go methods

    big method

    Causes the calling string object to be displayed in big font by surrounding it with HTML big font tags, <BIG> and </BIG>.

    Syntax

    big()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • fontsize, small methods

    blink method

    Causes the calling string object to blink by surrounding it with HTML blink tags, <BLINK> ... </BLINK>.

    Syntax

    blink()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • bold, italics, strike methods

    blur method

    For password, text, and textArea, removes focus to the object.

    Syntax

    blur()

    Description

    Use the blur method to remove focus from a specific form element.

    Applies to

    password, text, textArea

    Examples

    xxx Examples to be supplied.

    See also

  • focus, select methods

    bold method

    Causes the calling string object to be displayed as bold by surrounding it with HTML bold tags, <B> ... </B>.

    Syntax

    bold()
    NOTE: For Beta4, use B() for this method.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • blink, italics, strike methods

    ceil method

    Returns the least integer greater than or equal to its argument.

    Syntax

    ceil(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • floor method

    charAt method

    Returns the character at the specified index.

    Syntax

    charAt(index)

    index is any integer from 0 to string.length() - 1.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • indexOf, lastIndexOf methods

    clear method

    Clears the window.

    Syntax

    clear()

    Description

    xxx Description to be supplied.

    Applies to

    document

    Examples

    xxx Examples to be supplied.


    clearTimeout method

    Cancels a timeout that was set with the setTimeout method.

    Syntax

    clearTimeout(timeoutID)

    timeoutID is a timeout setting that was returned by a previous call to the setTimeout method.

    Description

    xxx Description to be supplied. Applies to

    window

    Examples

    xxx Examples to be supplied.

    See also

  • setTimeout

    click method

    Simulates a mouse click on the calling form element.

    Syntax

    click()

    Description

    The effect of the click method varies according to the calling element:

  • For button, reset, and submit, xxx.
  • For a radioButton, selects a radio button.
  • For a checkbox, checks the check box and sets its value to on.
  • For a selection, sets its value.

    Applies to

    button, checkbox, radioButton, reset, selection, submit

    Examples

    xxx Examples to be supplied.


    close method

    For document and window, closes the window. xxx Not yet implemented in Beta 4.

    Syntax

    close()

    Description

    Document description to be supplied.

    The close method closes the current window.

    Applies to

    document, window

    Examples

    Any of the following examples close the current window:

    window.close()
    self.close()
    close()

    See also

  • open method

    confirm method

    Displays a Confirm dialog box with the specified message and OK and Cancel buttons.

    Syntax

    confirm("message")

    The argument message is any string.

    Description

    Use the confirm method to ask the user to make a decision that requires either an OK or a Cancel. The message argument specifies a message that prompts the user for the decison. The confirm method returns true if the user chooses OK and false if the user chooses Cancel.

    Applies to

    window

    Examples

    This example uses the confirm method in the confirmCleanUp function to confirm that the user of an application really wants to quit. If the user chooses OK, the custom cleanUp() function closes the application.

    function confirmCleanUp() {
       if (confirm("Are you sure you want to quit this application?")) {
          cleanUp()
       }
    }
    You can call the confirmCleanUp function in the onClick event handler of a form's pushbutton, as shown in the following example:
    <INPUT TYPE="button" VALUE="Quit" onClick="confirmCleanUp()">

    See also

  • alert, prompt methods

    cos method

    Returns the cosine of its argument. The argument is in radians.

    Syntax

    cos(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • acos, asin, atan, sin, tan methods

    eval function

    The eval function is a function built-in to JavaScript. It is not a method associated with any object, but is part of the language itself.

    Syntax

    eval(expression)

    Description

    The eval function takes a JavaScript arthimetic expression as its argument and returns the value of the argument as a number.

    Example

    Both of the uses of eval in the following example assign the value 42 to the variable result.

    x = 6
    result = eval((3+3)*7)
    result = eval(x*7)
    

    exp method

    Returns e to the power of its argument, i.e. ex, where x is the argument, and e is Euler's constant, the base of the natural logarithms.

    Syntax

    exp(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • log method

    fixed method

    Causes the calling string object to be displayed in fixed-pitch font in HTML by surrounding it with typewriter text tags, <fixed> ... </fixed>.

    Syntax

    fixed()
    NOTE: For Beta4, use TT() for this method.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.


    floor method

    Returns the greatest integer less than or equal to its argument.

    Syntax

    floor(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • ceil method

    focus method

    For password, text, and textArea, gives focus to the object.

    Syntax

    focus()

    Description

    Use the focus method to navigate to a specific form element and give it focus. You can then either programatically enter a value in the element or let the user enter a value.

    Applies to

    password, text, textArea

    Examples

    In the following example, the checkPassword function confirms that a user has entered a valid password. If the password is not valid, the focus method returns focus to the password field and the select method highlights it so the user can re-enter the password.

    function checkPassword(userPass) {
       if (badPassword) {
          alert("Please enter your password again.")
          userPass.focus()
          userPass.select()
       }
    }
    This example assumes that the password is defined as:
    <INPUT TYPE=password NAME=userPass>

    See also

  • blur, select methods

    fontcolor method

    Causes the calling string object to be displayed in the specified color by surrounding it with HTML font color tags, <FONTCOLOR=color> ... </FONTCOLOR>.

    Syntax

    fontcolor(color)

    The argument to the method, color, must be a string containing a hashmark (#) followed by a triplet of hexadecimal number pairs. These three pairs represent the red, green, and blue values for the desired color, respectively.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.


    fontsize method

    Causes the calling string object to be displayed in the specified font size by surrounding it with HTML font size tags, <FONTSIZE=size> ... </FONTSIZE>.

    Syntax

    fontsize(size)

    The argument to the method, size, must be an integer between one and seven.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • big, small methods

    forward method

    Loads the next URL in the history list.

    Syntax

    forward()

    Description

    This method performs the same action as a user choosing the Forward button in the Navigator. The forward method is the same as go(1).

    Applies to

    history

    Examples

    xxx Examples to be supplied.

    See also

  • back, go methods

    getDate method

    Syntax

    dateObj.getDate()

    where dateObj is a date object.

    Description

    Returns the day of the month for the date object, an integer between 1 and 31.

    Applies to

    Date

    Examples

    The second statement below assigns the value 25 to the variable day, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    day = Xmas95.getDate()
    

    See also

  • xxx To be supplied.

    getDay method

    Syntax

    dateObj.getDay()

    where dateObj is a date object.

    Description

    Returns the day of the week for the date object, an integer corresponding to the day of the week: zero for Sunday, one for Monday, two for Tuesday, and so on.

    Applies to

    Date

    Examples

    The second statement below assigns the value 1 to weekday, based on the value of the date object Xmas95. This is because December 25, 1995 is a Monday.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    weekday = Xmas95.getDay()
    

    See also

  • xxx To be supplied.

    getHours method

    Syntax

    dateObj.getHours()

    where dateObj is a date object.

    Description

    Returns the hour for the date object, an integer between 0 and 23.

    Applies to

    Date

    Examples

    The second statement below assigns the value 23 to the variable hours, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    hours = Xmas95.getHours()
    

    See also

  • xxx To be supplied.

    getMinutes method

    Syntax

    dateObjgetMinute()

    where dateObj is a date object.

    Description

    Returns the minutes in the date object, an integer between 0 and 59.

    Applies to

    Date

    Examples

    The second statement below assigns the value 15 to the variable minutes, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    minutes = Xmas95.getMinutes()
    

    See also

  • xxx To be supplied.

    getMonth method

    Syntax

    dateObj.getMonth()

    where dateObj is a date object.

    Description

    Returns the month in the date object, an integer between zero and eleven. Zero corresponds to January, one to Februrary, and so on.

    Applies to

    Date

    Examples

    The second statement below assigns the value 11 to the variable month, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    month = Xmas95.getDate()
    

    See also

  • xxx To be supplied.

    getSeconds method

    Syntax

    dateObj.getSeconds()

    where dateObj is a date object.

    Description

    Returns the seconds in the current time, an integer between 0 and 59.

    Applies to

    Date

    Examples

    The second statement below assigns the value 30 to the variable secs, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:30")
    secs = Xmas95.getSeconds()
    

    See also

  • xxx To be supplied.

    getTime method

    Syntax

    dateObj.getTime()

    where dateObj is a date object.

    Description

    Returns the numeric value for the date object. This number is the number of milliseconds since the epoch (1 January 1970 00:00:00) You can use this method to help assign a date and time to another date object.

    Applies to

    Date

    Examples

    The following example assigns the date value of theBigDay to sameAsBigDay.

    theBigDay = new Date("July 1, 1999")
    sameAsBigDay = new Date();
    sameAsBigDay.setTime(theBigDay.getTime())
    

    See also

  • xxx To be supplied.

    getTimezoneOffset method

    Syntax

    dateObj.getTimezoneOffset()

    where dateObj is a date object.

    Description

    Return the time zone offset in minutes for the current locale, i.e. the difference between the local time and GMT. This value would be a constant except for daylight savings time.

    Applies to

    Date

    Examples

    x = new Date();
    currentTimeZoneOffsetInHours = x.getTimezoneOffset()/60;
    

    See also

  • xxx To be supplied.

    getYear method

    Syntax

    getyear()

    Description

    Returns the year in the date object, less 1900.

    Applies to

    Date

    Examples

    The second statement below assigns the value 95 to the variable year, based on the value of the date object Xmas95.

    Xmas95 = new Date("December 25, 1995 23:15:00")
    year = Xmas95.getYear()
    

    See also

  • xxx To be supplied.

    go method

    The argument delta is an integer. If delta  is greater than zero, then it loads the URL that is that number of entries forward in the history list; otherwise, it loads the URL that is that number of entries backward in the history list.

    The argument string is a string. Go to the newest history entry whose title or URL contains string as a substring; substring matching is case-insensitive.

    Syntax

    go(delta | "string")

    Description

    xxx Description to be supplied.

    Applies to

    history

    Examples

    xxx Examples to be supplied.

    See also

  • back, forward methods

    indexOf method

    Returns the index within the calling string object of the first occurrence of the specified character, starting the search at fromIndex.

    Syntax

    indexOf(character, [fromIndex])

    character is the character to search for.
    fromIndex is the location within the calling string to start the search from, any integer from 0 to string.length() - 1.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • charAt, lastIndexOf methods

    italics method

    Causes the calling string object to be italicized by surrounding it with HTML italics tags, <I> ... </I>.

    Syntax

    italics()
    NOTE: For Beta4, use I() for this method.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • blink, bold, strike methods

    lastIndexOf method

    Returns the index within the calling string object of the last occurrence of the specified character. The calling string is searched backwards, starting at fromIndex.

    Syntax

    indexOf(character, [fromIndex])

    character is the character to search for.
    fromIndex is the location within the calling string to start the search from, any integer from 0 to string.length() - 1.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • charAt, indexOf methods

    link method

    Causes the calling string object to be a hyperlink by surrounding it with HTML hyperlink tags, <A HREF=...> </A>.

    Syntax

    link(location)
    The argument to the method, location, should be a valid URL.

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • anchor method

    log method

    Returns the natural logarithm (base e) of its argument.

    Syntax

    log(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • exp method

    max method

    Returns the greater of its two arguments.

    Syntax

    max(arg1, arg2)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • min method

    min method

    Returns the lesser of its two arguments.

    Syntax

    min(arg1, arg2)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • max method

    open method

    For the window object, opens a new web browser window. xxx For the document object, description to be supplied.

    Syntax

    The first form of the syntax is for the document object; the second form is for window.

    1. document.open("MIME type")
    2. window.open("URL", "windowName", ["windowFeatures"])

    URL specifies the URL to open in the new window.
    windowName specifies a name for the window object being opened.
    windowFeatures is a comma-separated list of any of the following options and values:

       toolbar[=yes|no]|[=1|0]
       location[=yes|no]|[=1|0]
       directories[=yes|no]|[=1|0]
       status[=yes|no]|[=1|0]
       menubar[=yes|no]|[=1|0]
       scrollbars[=yes|no]|[=1|0]
       resizable[=yes|no]|[=1|0]
       copyhistory[=yes|no]|[=1|0]
       width=pixels
       height=pixels
    

    You may use any subset of these options. Separate options with a comma. Do not put spaces between the options.

    pixels is a positive integer specifying the dimension in pixels.

    NOTE: In event handlers, you must specify window.open() unless you want to call document.open() because of the scoping of static objects in JavaScript.

    Description for window

    The open method opens a new web browser window on the client, similar to choosing File|New Web Browser from the menu of the Navigator. The URL argument specifies the URL contained by the new window. If URL is an empty string, a new, empty window is created.

    windowFeatures is an optional, comma-separated list of options for the new window. The boolean windowFeatures options are set to true if they are specified without values, or as yes or 1. For example, open("", "messageWindow", "toolbar") and open("", "messageWindow", "toolbar=1") both set the toolbar option to true. If windowName does not specify an existing window and you do not specify windowFeatures, all boolean windowFeatures are true by default.

    Following is a description of the windowFeatures:

  • toolbar creates the standard Navigator toolbar, with buttons such as "Back" and "Forward", if true
  • location creates a Location entry field, if true
  • directories creates the standard Navigator directory buttons, such as "What's New" and "What's Cool", if true
  • status creates the status bar at the bottom of the window, if true
  • menubar creates the menu at the top of the window, if true
  • scrollbars creates horizontal and vertical scrollbars when the document grows larger than the window dimensions, if true
  • resizable allows a user to resize the window, if true
  • copyhistory gives the new window the same session history as the current window, if true
  • width specifies the width of the window in pixels
  • height specifies the height of the window in pixels

    Description for document

    Description to be supplied.

    Applies to

    document, window

    Examples

    In the following example, the windowOpener function opens a window and uses write methods to display a message:

    function windowOpener() {
       msgWindow=open("","Display window","toolbar=no,directories=no,menubar=no");
       msgWindow.document.write("<HEAD><TITLE>Message window</TITLE>");
       msgWindow.document.write("<CENTER><BIG><B>Hello, world!</B>");
    }
    

    The following is an onClick event handler that opens a new client window displaying the content specified in the file sesame.html. It opens it with the specified option settings and names the corresponding window object newWin.

    <FORM NAME="myform"> <INPUT TYPE="button" NAME="Button1" VALUE="Open Sesame!" onClick="window.open('sesame.html', 'newWin', 'toolbar=no,directories=no,menubar=no,status=yes,width=300,height=300')"> </form>

    Notice the use of single quotes (') inside the onClick event handler.

    See also

  • close method

    parse method

    Syntax

    Date.parse(date string)

    Description

    The parse function takes a date string (such as "Dec 25, 1995"), and returns the number of milliseconds since January 1, 1970 00:00:00 (local time). This function is useful for setting date values based on string values, for example in conjunction with the setTime method.

    Given a string representing a time, parse returns the time value. It accepts the IETF standard date syntax: "Mon, 25 Dec 1995 13:30:00 GMT". It understands the continental US time zone abbreviations, but for general use, use a time zone offset, for example "Mon, 25 Dec 1995 13:30:00 GMT+0430" (4 hours, 30 minutes west of the Greenwich meridian). If you do not specify a time zone, the local time zone is assumed. GMT and UTC are considered equivalent.

    The parse function is a static method of Date. That means that you always use it as Date.parse(), rather than as a method of a date object you created.

    Applies to

    Date

    Examples

    If IPOdate is an existing date object, then

    IPOdate.setTime(Date.parse("Aug 9, 1995"))
    

    See also

  • UTC method

    pow method

    Returns arg1 to the arg2 power, i.e. arg1arg2.

    Syntax

    pow(arg1, arg2)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • sqrt method

    prompt method

    Displays an Prompt dialog box with a message and an input field

    Syntax

    prompt(message, input default)

    Description

    Use the prompt method to display a dialog box that takes user input. The arguments, message and input default are JavaScript values to be displayed as the message and the default value in the input field, respectively.

    Applies to

    window

    Examples

    prompt("Enter the number of doughnuts you want:", 12)
    

    See also

  • alert, confirm methods

    random method

    Returns a pseudo-random number between zero and one. xxx NYI.

    Syntax

    xxx To be supplied.

    Applies to

    Math

    Examples

    xxx Examples to be supplied.


    round method

    Returns its argument, rounded to the nearest integer. In other words, if its argument is n.5 or greater (where n is an integer), returns n+1, otherwise returns n.

    Syntax

    round(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.


    select method

    For password, text, and textArea, selects the input area of the object.

    Syntax

    select()

    Description

    Use the select method to highlight the input area of a form element. You can use the select method with the focus method to highlight a field and position the cursor for a user response.

    Applies to

    password, text, textArea

    Examples

    In the following example, the checkPassword function confirms that a user has entered a valid password. If the password is not valid, the select method highlights the password field and focus method returns focus to it so the user can re-enter the password.

    function checkPassword(userPass) {
       if (badPassword) {
          alert("Please enter your password again.")
          userPass.focus()
          userPass.select()
       }
    }
    This example assumes that the password is defined as:
    <INPUT TYPE=password NAME=userPass>

    See also

  • blur, focus methods

    setDate method

    Syntax

    dateObj.setDate(day)

    where dateObj is a date object.

    Description

    Sets the day of the month for the date object. The argument is an integer from 1 to 31.

    Applies to

    Date

    Examples

    The second statement below changes the day for theBigDay to the 24th of July from its original value.

    theBigDay = new Date("July 27, 1962 23:30:00")
    Xmas95.setDate(24)
    

    See also

  • xxx To be supplied.

    setHours method

    Syntax

    dateObj.setHours(hours

    where dateObj is a date object.

    Description

    Sets the hours in the current time. The argument is an integer between 0 and 23.

    Applies to

    Date

    Examples

    theBigDay.setHours(7)
    

    See also

  • xxx To be supplied.

    setMinutes method

    Syntax

    dateObj.setMinutes(minutes)

    where dateObj is a date object.

    Description

    Sets the minutes in the current time. The argument is an integer between 0 and 59.

    Applies to

    Date

    Examples

    theBigDay.setMinutes(45)
    

    See also

  • xxx To be supplied.

    setMonth method

    Syntax

    dateObj.setMonth(month)

    where dateObj is a date object.

    Description

    Sets the month in the current date. The argument is an integer between 0 and 11.

    Applies to

    Date

    Examples

    theBigDay.setMonth(6)
    

    See also

  • xxx To be supplied.

    setSeconds method

    Syntax

    dateObj.setSeconds(seconds)

    where dateObj is a date object.

    Description

    Sets the seconds in the current time. The argument is an integer between 0 and 59.

    Applies to

    Date

    Examples

    theBigDay.setSeconds(30)
    

    See also

  • xxx To be supplied.

    setTime method

    Syntax

    dateObj.setTime(timevalue)

    where dateObj is a date object.

    Description

    Sets the value of the date object. This argument is the number of milliseconds since the epoch (1 January 1970 00:00:00) You can use this method to help assign a date and time to another date object.

    Applies to

    Date

    Examples

    theBigDay = new Date("July 1, 1999")
    sameAsBigDay = new Date();
    sameAsBigDay.setTime(theBigDay.getTime())
    

    setTimeout method

    Evaluates an expression after a specified number of milliseconds have elapsed.

    Syntax

    timeoutID=setTimeout(expression, msec)

    expression is a string expression.
    msec is a numeric value or numeric string in millisecond units.
    timeoutID is an identifier that is used only to cancel the evaluation with the clearTimeout method.

    Description

    xxx Description to be supplied. Applies to

    window

    Examples

    xxx Examples to be supplied.

    See also

  • clearTimeout

    setYear method

    Syntax

    dateObj.setYear(year)

    where dateObj is a date object.

    Description

    Sets the year in the current date. Takes as its argument an integer greater than 1900.

    Applies to

    Date

    Examples

    theBigDay.setYear(96)
    

    See also

  • xxx To be supplied.

    sin method

    Returns the sine of its argument. The argument is in radians.

    Syntax

    sin(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • acos, asin, atan, cos, tan methods

    small method

    Causes the calling string object to be displayed in small font by surrounding it with HTML small font tags, <SMALL>....

    Syntax

    small()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • big, fontsize methods

    sqrt method

    Returns the square root of its argument.

    Syntax

    sqrt(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • pow method

    strike method

    Causes the calling string object to be displayed as struck out text, by surrounding it with HTML strikeout tags, <STRIKE> ... </STRIKE>.

    Syntax

    strike()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • blink, bold, italics methods

    sub method

    Causes the calling string object to be displayed as a subscript by surrounding it with HTML subscript tags, <SUB> ... </SUB>.

    Syntax

    sub()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    sup method


    submit method

    Submits the form.

    Syntax

    submit()

    Description

    xxx Description to be supplied.

    Applies to

    form

    Examples

    xxx Examples to be supplied.


    substring method

    The substring method returns a subset of a string object. If a < b, then it returns the subset starting at character a and ending before character b, considering the first character of the string to be character zero (0). If a > b, then it returns the subset starting at character b and ending at character a. If a = b, then it returns the empty string.

    Syntax

    substring(a, b)

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    If string x is "netscape" then x.substring(0,3) or x.substring(3,0) returns "net", and x.substring(4,7) or x.substring(7,4) returns "cap".


    sup method

    Causes the calling string object to be displayed as a superscript by surrounding it with HTML superscript tags, <SUP> ... </SUP>.

    Syntax

    sup()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    xxx Examples to be supplied.

    See also

  • sub method

    tan method

    Returns the tangent of its argument. The argument is in radians.

    Syntax

    tan(arg)

    Applies to

    Math

    Examples

    xxx Examples to be supplied.

    See also

  • acos, asin, atan, cos, sin methods

    toGMTString method

    Syntax

    dateObj.toGMTString()

    where dateObj is a date object.

    Description

    Converts a date to a String, using the Internet GMT conventions.

    Applies to

    Date

    Examples

    today.toGMTString()
    

    If today is a date object, then toGMTString would convert the date to GMT (UTC) using the operating system's time zone offset, and return a string value in the following form:
    Mon, 18 Dec 1995 17:28:35 GMT


    toLocaleString method

    Syntax

    dateObj.toLocaleString()

    where dateObj is a date object.

    Description

    Converts a date to a String, using the locale conventions.

    Applies to

    Date

    Examples

    today.toLocaleString()
    

    If today is a date object, then toLocaleString will return a string value in the following form:
    12/18/95 17:28:35


    toLowerCase method

    The toLowerCase method of string objects converts the string to all upper case.

    Syntax

    toLowerCase()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    For example, "ALPHABET".toLowerCase yields "alphabet".

    See also

  • toUpperCase method

    toString method

    For location, returns location.href, so you can use location as a string without typing ".href". For Date, converts a date to a string.

    Syntax

    toString()

    Description

    xxx Description to be supplied.

    Applies to

    location, Date methods

    Examples

    Here is an example of using toString with a date object, assuming theBigDay is a date object:

    theBigDay.toString()
    

    More Examples to be supplied.


    toUpperCase method

    The toUpperCase method of string objects converts the string to all upper case.

    Syntax

    toUpperCase()

    Description

    xxx Description to be supplied.

    Applies to

    string

    Examples

    For example, "alphabet".toUpperCase yields "ALPHABET".

    See also

  • toLowerCase method

    UTC method

    Syntax

    Date.UTC(year, month, mday [, hrs] [, min] [, sec])

    Description

    UTC takes comma-delimited date parameters and returns the number of milliseconds since January 1, 1970 00:00:00, Universal Coordinated Time (GMT). The arameters are:

    • year - a year after 1900
    • month - a month between 0-11
    • date - day of the month between 1-31
    • hrs - hours between 0-23
    • min - minutes between 0-59
    • sec - seconds between 0-59

    UTC is a static method of Date. That means that you always use it as Date.UTC(), rather than as a method of a date object you created.

    Applies to

    Date

    Examples

    The following statement creates a date object using GMT instead of local time:

    gmtDate = new Date(Date.UTC(96, 11, 1, 0, 0, 0))
    

    See also

  • parse method

    write method

    Write HTML to the current window, in sequence with the HTML containing this SCRIPT. SCRIPTs have no effect on paragraphs or other structures in which they may occur.

    Syntax

    write()

    Description

    xxx Description to be supplied.

    Applies to

    document

    Examples

    xxx Examples to be supplied.

    See also

  • writeln method

    writeln method

    The same as write(), but adds a newline character. Note that this affects only preformatted text (inside a <PRE> or <XMP> tag).

    Syntax

    writeln()

    Description

    xxx Description to be supplied.

    Applies to

    document

    Examples

    xxx Examples to be supplied.

    See also

  • write method
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