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Field
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摘要： 嵌套 | 字段 | <A HREF="#constructor_summary">构造函数</A> | <A HREF="#method_summary">方法</A></FONT></TD>
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net.conic.prototype</FONT>
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类 Field</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../resources/inherit.gif" ALT="继承者 "><B>net.conic.prototype.Field</B>
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<DL>
<DT><PRE>public class <B>Field</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
HTML中Field的常用操作的Helper类,这个类主要是内部使用,不建议外部引用
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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/Field.html#Field()">Field</A></B>()</CODE>
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<B>方法摘要</B></FONT></TH>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/Field.html#activate(net.conic.prototype.Object)">activate</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</CODE>
<BR>
使得指定的表单元素处于活动状态(获得焦点或者内容处于选中状态)</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/Field.html#clear(net.conic.prototype.Object...)">clear</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A>... elements)</CODE>
<BR>
将指定的elements的value都设置为空字符串</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/Field.html#focus(net.conic.prototype.Object)">focus</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</CODE>
<BR>
使得指定的表单元素获得焦点</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/Field.html#present(net.conic.prototype.Object...)">present</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A>... elements)</CODE>
<BR>
判断给定的elements的value是否都存在</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../net/conic/prototype/Field.html#select(net.conic.prototype.Object)">select</A></B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</CODE>
<BR>
使得指定的表单元素内容处于选中状态</TD>
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<TH ALIGN="left"><B>从类 java.lang.Object 继承的方法</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<B>构造函数详细信息</B></FONT></TH>
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<A NAME="Field()"><!-- --></A><H3>
Field</H3>
<PRE>
public <B>Field</B>()</PRE>
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<A NAME="clear(net.conic.prototype.Object...)"><!-- --></A><H3>
clear</H3>
<PRE>
public static void <B>clear</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A>... elements)</PRE>
<DL>
<DD>将指定的elements的value都设置为空字符串
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>elements</CODE> - 变长参数,各个元素的id或者元素对象; <p><b>Example:</b></p><pre><script language="javascript" src="prototype.js"></script><script language="javascript">function test(){ Field.clear("text1","text2");}</script> <input id="text1" type="text" value="11111" /> <input id="text2" type="text" value="2222" /> <input type="button" id="button" value="clear" onclick="test()"/></pre></DL>
</DD>
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<A NAME="focus(net.conic.prototype.Object)"><!-- --></A><H3>
focus</H3>
<PRE>
public static void <B>focus</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</PRE>
<DL>
<DD>使得指定的表单元素获得焦点
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>element</CODE> - 发生作用的元素的id或者元素对象</DL>
</DD>
</DL>
<HR>
<A NAME="present(net.conic.prototype.Object...)"><!-- --></A><H3>
present</H3>
<PRE>
public static boolean <B>present</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A>... elements)</PRE>
<DL>
<DD>判断给定的elements的value是否都存在
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>elements</CODE> - 变长参数,各个元素的id或者元素对象;
<DT><B>返回：</B><DD>true-给定的所有的表单元素的value都不为空字符串; false-反之;</DL>
</DD>
</DL>
<HR>
<A NAME="select(net.conic.prototype.Object)"><!-- --></A><H3>
select</H3>
<PRE>
public static void <B>select</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</PRE>
<DL>
<DD>使得指定的表单元素内容处于选中状态
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>element</CODE> - 发生作用的元素的id或者元素对象</DL>
</DD>
</DL>
<HR>
<A NAME="activate(net.conic.prototype.Object)"><!-- --></A><H3>
activate</H3>
<PRE>
public static void <B>activate</B>(<A HREF="../../../net/conic/prototype/Object.html" title="net.conic.prototype 中的类">Object</A> element)</PRE>
<DL>
<DD>使得指定的表单元素处于活动状态(获得焦点或者内容处于选中状态)
<P>
<DD><DL>
<DT><B>参数：</B><DD><CODE>element</CODE> - 发生作用的元素的id或者元素对象</DL>
</DD>
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