有name为action的表单元素时取form的属性action杯具了
时间:2011-04-02 07:59来源: 作者: 点击:
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有name为action的表单元素时</div>
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<p> </p>
<p>如下<br /> <br />01 <!DOCTYPE html> </p>
<p>02 <html> </p>
<p>03 <head> </p>
<p>04 <meta charset="utf-8"> </p>
<p>05 <title>有name为action的表单元素时取form的属性action杯具了</title> </p>
<p>06 </head> </p>
<p>07 <body> </p>
<p>08 <form name="mform" action="<a href="http://xxx">http://xxx</a>"> </p>
<p>09 <input type="radio" name="action" value="1"/> 动作1 </p>
<p>10 <input type="radio" name="action" value="2"/> 动作2 </p>
<p>11 <input type="radio" name="action" value="3"/> 动作3 </p>
<p>12 <br/> </p>
<p>13 <input type="submit" value="提交"/> </p>
<p>14 </form> </p>
<p>15 <script type="text/javascript"> </p>
<p>16 document.mform.onsubmit = function(){ </p>
<p>17 alert(this.action); </p>
<p>18 return false; </p>
<p>19 } </p>
<p>20 </script> </p>
<p>21 </body> </p>
<p>22 </html> </p>
<p> </p>
<p>后台经常根据动作（action）来判断要调用的逻辑。这时form.action会优先取到表单元素而非form的属性action。所有浏览器中都一致。</p>
<p>这时获取form的属性使用this.getAttribute是安全的。</p>
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<li>上一篇：<a href='/wangzhankaifa/javascript-ajax/201104/02-6984.html'>分析JavaScript中同名标识符的优先级</a> </li>
<li>下一篇：<a href='/wangzhankaifa/javascript-ajax/201104/02-6986.html'>各浏览器中中关键字作为对象属性的差异</a> </li>
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