The following properties are available in JavaScript:
action alinkColor anchors bgColor checked current defaultChecked defaultSelected defaultStatus defaultValue E elements fgColor forms frames hash host hostname href index lastModified length linkColor links LN2 LN10 loadedDate location method name options parent pathname PI port protocol referrer search selected selectedIndex self SQRT1_2 SQRT2 status target text title top value vlinkColor window
RGB value for color of activated links (after mouse-button down, but before mouse-button up), expressed as a hexadecimal triplet. This property is the JavaScript reflection of the ALINK attribute of the HTML BODY tag.
Array of objects corresponding to named anchors (<A NAME="">/TT> tags) in source order.
The anchors array contains an entry for each anchor in a document. For example, if a document contains three anchors, these anchors are reflected as document.anchors[0], document.anchors[1], and document.anchors[2].
To obtain the number of anchors in a document, use the length property: document.anchors.length.
RGB value of background color, expressed as a hexadecimal triplet. This property is the JavaScript reflection of the BGCOLOR attribute of the HTML BODY tag.
For checkbox, Boolean property that indicates if the element is selected by default, by the CHECKED attribute. For radioButton, Boolean property that indicates if the element is selected by default, by the CHECKED attribute.
For a window, the defaultStatus property reflects the default message displayed in the status bar at the bottom of the window. Do not confuse defaultStatus with status. The status property reflects a priority or transient message in the status bar, such as the message that appears when a mouseOver event occurs over an anchor.
Array of objects corresponding to form elements (such as checkbox, radioButton, and text objects) in source order.
The elements array contains an entry for each object in a form. For example, if a form has a text field, a radio button group, and a checkbox, these elements are reflected as formName.elements[0], formName.elements[1], and formName.elements[2].
RGB value of foreground (text) color, expressed as a hexadecimal triplet. This property is the JavaScript reflection of the FGCOLOR attribute of the HTML BODY tag.
Array of objects corresponding to named forms (<FORM NAME="">/TT> tags) in source order.
The forms array contains an entry for each form object in a document. For example, if a document contains three forms, these forms are reflected as document.forms[0], document.forms[1], and document.forms[2].
You can refer to a form's elements by using the forms array. For example, you would refer to a text object named quantity in the second form as:
document.forms[1].quantity
You would refer to the value property of this text object as:
document.forms[1].quantity.value
To obtain the number of forms in a document, use the length property: document.forms.length.
Array of objects corresponding to child frame windows (<FRAMESET>tag) in source order.
The frames array contains an entry for each child frame in a window. For example, if a window contains three child frames, these frames are reflected as window.frames[0], window.frames[1], and window.frames[2].
To obtain the number of number of child frames in a window, use the length property: window.frames.length.
For radioButton, number, the ordinal number of the radioButton field, 0-based. For a select object option, the number identifying the position of the option in the selection, starting from zero.
For a history object, the length of the history list. For a string object, the integer length of the string. For a radioButton object, the number of radio buttons in the object. For an anchors, forms, frames, links, or options array, the number of elements in the array.
Array of objects corresponding to link objects (<A HREF=URL>/TT> tags) in source order.
The links array contains an entry for each link object in a document. For example, if a document contains three link objects, these links are reflected as document.links[0], document.links[1], and document.links[2].
To obtain the number of links in a document, use the length property: document.links.length.
A string whose value is the same as the NAME attribute of the object. Note that for button, reset, and submit objects, this is the internal name for the button, not the label that appears onscreen.
Array of objects corresponding to options in a selection object (<OPTION>tags) in source order.
The options array contains an entry for each option in a selection object. For example, if a selection object named musicStyle contains three options, these options are reflected as musicStyle.options[0], musicStyle.options[1], and musicStyle.options[2].
To obtain the number of options in a selection object, use the length property: objectName.options.length.
The self property refers to the current window. Use the self property to disambiguate a window property from a form of the same name. You can also use the self property to make your code more readable.
Applies to
window
Examples
In the following example, self.status is used to set the status property. This usage disambiguate the status property of a window from a form called "status".
<A HREF=""
onClick="this.href=pickRandomURL();"
onMouseOver="self.status='Pick a random URL' ; return true">
For a window, the status property reflects a priority or transient message in the status bar at the bottom of the window, such as the message that appears when a mouseOver event occurs over an anchor. Do not confuse status with defaultStatus. The defaultStatus property reflects the default message displayed in the status bar.
Applies to
window
Examples
Suppose you have created a JavaScript function called pickRandomURL() that lets you select a URL at random. You can use the onClick event handler of an anchor to specify a value for the HREF attribute of the anchor dynamically, and the onMouseOver event handler to specify a custom message for the window in the status property:
<A HREF=""
onClick="this.href=pickRandomURL();"
onMouseOver="self.status='Pick a random URL'; return true">
Go!</A>
In the above example, the status property of the window is assigned to the window's self property, as self.status. As this example shows, you must return true to set the status property in the onMouseOver event handler.
For button, reset, and submit objects, a string that is the same as the VALUE attribute (this is the label that appears onscreen, not the internal name for the button). For checkbox, a string, "on" if item is checked; "off" otherwise. For radioButton, a string, reflection of the VALUE attribute. For selection, reflection of VALUE attribute, sent to server on submit. For text and textArea, string, the contents of the field.
RGB value for color of visited links, expressed as a hexadecimal triplet. This property is the JavaScript reflection of the VLINK attribute of the HTML BODY tag.
The window property refers to the current window. Use the window property to disambiguate a property of the window object from a form of the same name. You can also use the window property to make your code more readable.
Applies to
window
Examples
In the following example, window.status is used to set the status property. This usage disambiguate the status property of a window from a form called "status".
<A HREF=""
onClick="this.href=pickRandomURL();"
onMouseOver="window.status='Pick a random URL' ; return true">
