props.html

常用的javascript实例

Array of objects corresponding to named forms (<TT>&ltFORM NAME=""&gt</TT> tags) in source order.

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

<P>You can refer to a form's elements by using the <I>forms</I> array. For example, you would refer to a text object named <I>quantity</I> in the second form as:
<PRE>
document.forms[1].quantity
</PRE>
You would refer to the value property of this text object as:
<PRE>
document.forms[1].quantity.value
</PRE>

<P>To obtain the number of forms in a document, use the length property: <TT>document.forms.length</TT>.


<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.

<H3>See also</H3>
<LI><A HREF=#length_property>length</A> property
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="frames_property"><H2>frames property</H2></A>
<P>
Array of objects corresponding to child frame windows (&LTFRAMESET> tag) in source order.

<P>The <I>frames</I> 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 <TT>window.frames[0]</TT>, <TT>window.frames[1]</TT>, and <TT>window.frames[2]</TT>.

<P>To obtain the number of number of child frames in a window, use the length property: <TT>window.frames.length</TT>.


<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.

<H3>See also</H3>
<LI><A HREF=#length_property>length</A> property
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="hash_property"><H2>hash property</H2></A>
<P>
The anchor name following the # symbol.


<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="host_property"><H2>host property</H2></A>
<P>
The hostname:port part of the location or URL.


<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.

<H3>See also</H3>
<LI><A HREF=#hostname_property>hostname</A>
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="hostname_property"><H2>hostname property</H2></A>
<P>
The hostname part of the location or URL.


<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.

<H3>See also</H3>
<LI><A HREF=#host_property>host</A>
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="href_property"><H2>href property</H2></A>
<P>
The entire URL as a JavaScript string.


<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="index_property"><H2>index property</H2></A>
<P>
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.


<P>
<H3>Applies to</H3>
<P><A HREF="objects.html#radioButton_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#radioButton_object">radioButton</A>, <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="lastModified_property"><H2>lastModified property</H2></A>
<P>
A string containing the last-modified date.


<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="length_property"><H2>length property</H2></A>
<P>
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 <I>anchors, forms, frames, links</I>, or <I>options</I> array, the number of elements in the array.

<P>For a null string, length is zero.

<P>
<H3>Applies to</H3>
<! xxx ->
<! xxx Might also apply to elements and readiobuttons properties. Find out. ->
<! xxx ->
<LI><A HREF="objects.html#applet_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#applet_object">applet</A>, <A HREF="objects.html#history_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#history_object">history</A>, <A HREF="objects.html#radioButton_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#radioButton_object">radioButton</A>, <A HREF="objects.html#string_object" tppabs="http://202.96.217.5/~xiaoyi/objects.html#string_object">string</A> objects
<LI><A HREF="props.html#anchors_property" tppabs="http://202.96.217.5/~xiaoyi/props.html#anchors_property">anchors</A>, <A HREF="props.html#forms_property" tppabs="http://202.96.217.5/~xiaoyi/props.html#forms_property">forms</A>, <A HREF="props.html#frames_property" tppabs="http://202.96.217.5/~xiaoyi/props.html#frames_property">frames</A>, <A HREF="props.html#links_property" tppabs="http://202.96.217.5/~xiaoyi/props.html#links_property">links</A>, <A HREF="props.html#options_property" tppabs="http://202.96.217.5/~xiaoyi/props.html#options_property">options</A> properties

<H3>Examples</H3>
<P>xxx Example with history to be supplied.
<P>If the string object <TT>mystring</TT> is <TT>&quotnetscape"</TT>, then <TT>mystring.length </TT>returns the integer 8.
<P>If the current document contains five forms, then <TT>document.forms.length</TT> returns the integer 5.
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="linkColor_property"><H2>linkColor property</H2></A>
<P>
RGB value for color of hyperlinks, expressed as a hexadecimal triplet.


<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="links_property"><H2>links property</H2></A>
<P>
Array of objects corresponding to link objects (<TT>&ltA HREF=<I>URL</I>&gt</TT> tags) in source order.

<P>The <I>links</I> 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 <TT>document.links[0]</TT>, <TT>document.links[1]</TT>, and <TT>document.links[2]</TT>.

<P>To obtain the number of links in a document, use the length property: <TT>document.links.length</TT>.


<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.

<H3>See also</H3>
<LI><A HREF=#length_property>length</A> property
<!------------------------------------------------------------------------------------------------->
<HR>
<A NAME="LN2_property"><H2>LN2 property</H2></A>
<P>
LN2 is the natural logarithm of two, roughly 0.693.


<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="LN10_property"><H2>LN10 property</H2></A>
<P>
LN10 is the natural logarithm of ten, roughly 2.302.


<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="loadedDate_property"><H2>loadedDate property</H2></A>
<P>
xxx Description to be supplied. Not yet implemented in Beta 4. 


<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="location_property"><H2>location property</H2></A>
<P>
The full URL of the document.


<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="method_property"><H2>method property</H2></A>
<P>
Value of METHOD attribute, &quotget" or &quotpost".



<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>

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