props.html

Java Script & VB Script 教程

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.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#button_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#button_object">button</A>, <A HREF="objects.html#checkbox_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#checkbox_object">checkbox</A>, <A HREF="objects.html#form_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#form_object">form</A>, <A HREF="objects.html#password_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#password_object">password</A>, <A HREF="objects.html#radioButton_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#radioButton_object">radioButton</A>, <A HREF="objects.html#reset_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#reset_object">reset</A>, <A HREF="objects.html#submit_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#submit_object">submit</A>, <A HREF="objects.html#text_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#text_object">text</A>, <A HREF="objects.html#textArea_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#textArea_object">textArea</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
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<HR>
<A NAME="options_property"><H2>options property</H2></A>
<P>
Array of objects corresponding to options in a selection object (&ltOPTION> tags) in source order.

<P>The <I>options</I> array contains an entry for each option in a selection object. For example, if a selection object named <I>musicStyle</I> contains three options, these options are reflected as <TT>musicStyle.options[0]</TT>, <TT>musicStyle.options[1]</TT>, and <TT>musicStyle.options[2]</TT>.

<P>To obtain the number of options in a selection object, use the length property: <TT><I>objectName</I>.options.length</TT>.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#selection_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#selection_object">selection</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.

<H3>See also</H3>
<LI><A HREF=#length_property>length</A> property
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<HR>
<A NAME="parent_property"><H2>parent property</H2></A>
<P>
In a &ltFRAMESET> and &ltFRAME> relationship, the &ltFRAMESET> window.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#window_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#window_object">window</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="pathname_property"><H2>pathname property</H2></A>
<P>
The file or object path name following the third slash.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#location_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#location_object">location</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="PI_property"><H2>PI property</H2></A>
<P>
Pi is the ratio of the circumference of a circle to its diameter, roughly 3.1415.

<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#Math_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#Math_object">Math</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="port_property"><H2>port property</H2></A>
<P>
The port number in a URL, if any; otherwise &quot".



<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#location_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#location_object">location</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="protocol_property"><H2>protocol property</H2></A>
<P>
The initial substring up to and including the first colon, which indicates the URL's access method.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#location_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#location_object">location</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="referrer_property"><H2>referrer property</H2></A>
<P>
xxx Description to be supplied.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#document_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#document_object">document</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="search_property"><H2>search property</H2></A>
<P>
Any query string or form data after ?.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#location_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#location_object">location</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="selected_property"><H2>selected property</H2></A>
<P>
Boolean property that indicates the current selected state of an option in a select object.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#selection_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#selection_object">selection</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="selectedIndex_property"><H2>selectedIndex property</H2></A>
<P>
xxx to be described


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#selection_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#selection_object">selection</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="self_property"><H2>self property</H2></A>
<P>
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.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#window_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#window_object">window</A>

<H3>Examples</H3>
<P>In the following example, <TT>self.status</TT> is used to set the status property. This usage disambiguate the status property of a window from a form called "status".
<XMP><A HREF=""
   onClick="this.href=pickRandomURL();"
   onMouseOver="self.status='Pick a random URL' ; return true">
Go!</A></XMP>

<H3>See also</H3>
<LI><A HREF=#window_property>window</A> property
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="SQRT1_2_property"><H2>SQRT1_2 property</H2></A>
<P>
SQRT1_2 is the square root of one-half; equivalently, one over the square root of two, roughly 0.707.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#Math_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#Math_object">Math</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="SQRT2_property"><H2>SQRT2 property</H2></A>
<P>
SQRT2 is the square root of two, roughly 1.414.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#Math_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#Math_object">Math</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="status_property"><H2>status property</H2></A>
<P>
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.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#window_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#window_object">window</A>

<H3>Examples</H3>
<P>
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:
<XMP><A HREF=""
   onClick="this.href=pickRandomURL();"
   onMouseOver="self.status='Pick a random URL'; return true">
Go!</A></XMP>
<P>In the above example, the status property of the window is assigned to the window's self property, as <TT>self.status</TT>. As this example shows, you must return true to set the status property in the onMouseOver event handler.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="target_property"><H2>target property</H2></A>
<P>
Window targeted for form response after the form has been submitted.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#form_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#form_object">form</A>, <A HREF="objects.html#link_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#link_object">link</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="text_property"><H2>text property</H2></A>
<P>
String, reflection of the text after the <TT>&ltOPTION></TT> tag.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#selection_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#selection_object">selection</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="title_property"><H2>title property</H2></A>
<P>
Current document title.

<! xxx Check to see if the title property is &quotUntitled" when it is undefined. ->


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#document_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#document_object">document</A>

<H3>Examples</H3>
<P>xxx Examples to be supplied.
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