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onclick：javascript事件，onclick事件会在对象被点击时发生。请注意，onclick与onmousedown不同。单击事件是在同一元素上发生了鼠标按下事件之后又发生了鼠标放开事件时才发生的。
onclick定义和用法
onclick事件会在对象被点击时发生。
onclick事件具有下表中的属性值：
值 描述
script 规定该onclick事件触发时执行的脚本。
支持该事件的HTML标签：
, , ,,,, ,,,
,,,
, ,, , , ,, , , to , ,,,,,, , , ,, , , ,, ,,, ,,, , , ,,<br /> <tfoot>, <th>,</p> <p> <thead>,<br /> <tr>,<tt>, <ul>,<var></p> <p> 支持该事件的JavaScript对象：</p> <p> button,document,checkbox,link,radio,reset,submit</p> <p> 实例1</p> <p> 在本例中，当按钮被单击时，第一个输入框中的文本会被拷贝到第二个输入框中：</p> <p> <html></p> <p> <body></p> <p> Field1:<inputtype="text"id="field1"value="HelloWorld!"></p> <p> <br/></p> <p> Field2:<inputtype="text"id="field2"></p> <p> <br/><br/></p> <p> 点击下面的按钮，把Field1的内容拷贝到Field2中：</p> <p> <br/></p> <p> <buttononclick="document.getElementById('field2').value= document.getElementById('field1').value">CopyText</button></p> <p> </body></p> <p> </html></p> <p> 总之，onclick给大家简单的介绍了一些，希望大家多看看。</p> <div style="font-size:0px;height:0px;line-height:0px;margin:0;padding:0;clear:both"></div> <!-- 正文末位置 --> <!-- 多条广告如下脚本只需引入一次 --> <script type="text/javascript" src="//cpro.baidustatic.com/cpro/ui/cno.js" async="async" defer="defer" ></script> </div> </div> <div class="back_b"> <a href="javascript:void(0);" onclick="history.back();">返回</a> </div> <div class="clear"></div> <!-- end: entry --> <i class="lt"></i> <i class="rt"></i> </div> <div class="entry_sb"> <i class="lb"></i> <i class="rb"></i> </div> <div class="ad_h"> <div class="ad_h_c"> <table> <tr> <td> <script type="text/javascript"> /*500宽矩形*/ var cpro_id = "u1507413"; 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,, ,,, ,,, , , ,,<br /> <tfoot>, <th>,</p> <p> <thead>,<br /> <tr>,<tt>, <ul>,<var></p> <p> 支持该事件的JavaScript对象：</p> <p> button,document,checkbox,link,radio,reset,submit</p> <p> 实例1</p> <p> 在本例中，当按钮被单击时，第一个输入框中的文本会被拷贝到第二个输入框中：</p> <p> <html></p> <p> <body></p> <p> Field1:<inputtype="text"id="field1"value="HelloWorld!"></p> <p> <br/></p> <p> Field2:<inputtype="text"id="field2"></p> <p> <br/><br/></p> <p> 点击下面的按钮，把Field1的内容拷贝到Field2中：</p> <p> <br/></p> <p> <buttononclick="document.getElementById('field2').value= document.getElementById('field1').value">CopyText</button></p> <p> </body></p> <p> </html></p> <p> 总之，onclick给大家简单的介绍了一些，希望大家多看看。</p> <div style="font-size:0px;height:0px;line-height:0px;margin:0;padding:0;clear:both"></div> <!-- 正文末位置 --> <!-- 多条广告如下脚本只需引入一次 --> <script type="text/javascript" src="//cpro.baidustatic.com/cpro/ui/cno.js" async="async" defer="defer" ></script> </div> </div> <div class="back_b"> <a href="javascript:void(0);" onclick="history.back();">返回</a> </div> <div class="clear"></div> <!-- end: entry --> <i class="lt"></i> <i class="rt"></i> </div> <div class="entry_sb"> <i class="lb"></i> <i class="rb"></i> </div> <div class="ad_h"> <div class="ad_h_c"> <table> <tr> <td> <script type="text/javascript"> /*500宽矩形*/ var cpro_id = "u1507413"; 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,,, , , ,,<br /> <tfoot>, <th>,</p> <p> <thead>,<br /> <tr>,<tt>, <ul>,<var></p> <p> 支持该事件的JavaScript对象：</p> <p> button,document,checkbox,link,radio,reset,submit</p> <p> 实例1</p> <p> 在本例中，当按钮被单击时，第一个输入框中的文本会被拷贝到第二个输入框中：</p> <p> <html></p> <p> <body></p> <p> Field1:<inputtype="text"id="field1"value="HelloWorld!"></p> <p> <br/></p> <p> Field2:<inputtype="text"id="field2"></p> <p> <br/><br/></p> <p> 点击下面的按钮，把Field1的内容拷贝到Field2中：</p> <p> <br/></p> <p> <buttononclick="document.getElementById('field2').value= document.getElementById('field1').value">CopyText</button></p> <p> </body></p> <p> </html></p> <p> 总之，onclick给大家简单的介绍了一些，希望大家多看看。</p> <div style="font-size:0px;height:0px;line-height:0px;margin:0;padding:0;clear:both"></div> <!-- 正文末位置 --> <!-- 多条广告如下脚本只需引入一次 --> <script type="text/javascript" src="//cpro.baidustatic.com/cpro/ui/cno.js" async="async" defer="defer" ></script> </div> </div> <div class="back_b"> <a href="javascript:void(0);" onclick="history.back();">返回</a> </div> <div class="clear"></div> <!-- end: entry --> <i class="lt"></i> <i class="rt"></i> </div> <div class="entry_sb"> <i class="lb"></i> <i class="rb"></i> </div> <div class="ad_h"> <div class="ad_h_c"> <table> <tr> <td> <script type="text/javascript"> /*500宽矩形*/ var cpro_id = "u1507413"; 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