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这段 javascript 代码 错哪了, 求解答

WBOY
WBOYOriginal
2016-06-13 10:12:08921browse

这段 javascript 代码 哪里错了, 求解答
全选功能失效:
代码如下:

HTML code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->                       <script>                   document.write("<ul>");                   for(var i=0;i<20;i++){                   document.write("<li>");                   document.write('<input type="checkbox" name="arr[]" value="'+i+'"> heihei');                   document.write("");                   }                   document.write("");                                </script>                                   <input id="ss" type="checkbox" onclick="all(this)">全选               <script>                 var cnames=document.getElementsByName("arr[]");                   alert(cnames.length);                                           function all(obj){                        for(var i=0;i<cnames.length;i++)                     {                                                cnames[i].checked=obj.checked;                     }                   }                                </script>      


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用firebug,调试下就出来了
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js最好用火狐的firbug调试。
------解决方案--------------------
all 是 js 保留字,不能作为函数名
------解决方案--------------------
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var cnames=document.getElementsByName("arr[]");

------解决方案--------------------
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all 是 js 保留字,不能作为函数名
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