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FormObserver
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net.conic.prototype</FONT>
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类 FormObserver</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../resources/inherit.gif" ALT="继承者 "><A HREF="../../../net/conic/prototype/TimedObserver.html" title="net.conic.prototype 中的类">net.conic.prototype.TimedObserver</A>
<IMG SRC="../../../resources/inherit.gif" ALT="继承者 "><B>net.conic.prototype.FormObserver</B>
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<DL>
<DT><PRE>public class <B>FormObserver</B><DT>extends <A HREF="../../../net/conic/prototype/TimedObserver.html" title="net.conic.prototype 中的类">TimedObserver</A></DL>
</PRE>
<P>
表单内容变更侦听类 <br>监听表单中任何表单成员的变更,任何表单成员内部的变更都会触发指定callback方法 <br><b>JS语法:</b> new Form.Observer(element,frequency,callback);
<P>
<P>
<DL>
<DT><B>版本：</B></DT>
<DD>Prototype Document Version 0.1</DD>
<DT><B>作者：</B></DT>
<DD>Chen (Email:jtjdskq@126.com)<p><b>Example:</b></p><pre><script language="javascript" src="prototype.js"></script><script language="javascript">function test(element,value){ alert(value);//当表单中成员的值发生变更就触发}window.onload = function(){ new Form.Observer("form1",5,test);}</script><form action="#" method="get" id="form1"> <input id="text1" name="text1" type="text" value="11111" /> <input id="text2" name="text2" type="text" value="2222" /> <select multiple="multiple" name="select" size="4" id="select1"> <option value="11">11</option> <option value="22" selected="selected">22</option> <option value="33">33</option> <option value="44">44</option> <option value="55">55</option></select><input type="button" id="button" value="clear" onclick="test()"/></form></pre></DD>
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<B>构造函数摘要</B></FONT></TH>
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<TD><CODE><B><A HREF="../../../net/conic/prototype/FormObserver.html#FormObserver(net.conic.prototype.Object, int, net.conic.prototype.Function)">FormObserver</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element,
int frequency,
<A HREF="../../../net/conic/prototype/Function.html" title="net.conic.prototype 中的类">Function</A> callback)</CODE>
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<B>方法摘要</B></FONT></TH>
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<CODE>protected <A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/FormObserver.html#getValue()">getValue</A></B>()</CODE>
<BR>
给子类定义其关注的变更对象的值</TD>
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<TH ALIGN="left"><B>从类 net.conic.prototype.<A HREF="../../../net/conic/prototype/TimedObserver.html" title="net.conic.prototype 中的类">TimedObserver</A> 继承的方法</B></TH>
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<TD><CODE><A HREF="../../../net/conic/prototype/TimedObserver.html#onTimerEvent()">onTimerEvent</A>, <A HREF="../../../net/conic/prototype/TimedObserver.html#registerCallback()">registerCallback</A></CODE></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="FormObserver(net.conic.prototype.Object, int, net.conic.prototype.Function)"><!-- --></A><H3>
FormObserver</H3>
<PRE>
public <B>FormObserver</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element,
int frequency,
<A HREF="../../../net/conic/prototype/Function.html" title="net.conic.prototype 中的类">Function</A> callback)</PRE>
<DL>
<DL>
<DT><B>另请参见：</B><DD><A HREF="../../../net/conic/prototype/TimedObserver.html#TimedObserver(net.conic.prototype.Object, int, net.conic.prototype.Function)"><CODE>TimedObserver.TimedObserver(Object, int, Function)</CODE></A></DL>
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<A NAME="getValue()"><!-- --></A><H3>
getValue</H3>
<PRE>
protected <A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> <B>getValue</B>()</PRE>
<DL>
<DD><B>从类 <CODE><A HREF="../../../net/conic/prototype/TimedObserver.html#getValue()">TimedObserver</A></CODE> 复制的描述</B></DD>
<DD>给子类定义其关注的变更对象的值
<P>
<DD><DL>
<DT><B>指定者：</B><DD>类 <CODE><A HREF="../../../net/conic/prototype/TimedObserver.html" title="net.conic.prototype 中的类">TimedObserver</A></CODE> 中的 <CODE><A HREF="../../../net/conic/prototype/TimedObserver.html#getValue()">getValue</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>返回：</B><DD>Form.serialize(form);<DT><B>另请参见：</B><DD><A HREF="../../../net/conic/prototype/TimedObserver.html#getValue()"><CODE>TimedObserver.getValue()</CODE></A></DL>
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