javascript当中document.all[i]的用法

1.document.all[i]     


document.all[i].tagName和attributes

马克-to-win: 注意第三章用 if (document.all) 来判断是不是火狐。和这里不一样。这里是document.all[i]返回所有element(带标签的)而不是Node(包括Text_Node),见后面的DOM, 。


例 1.1(DocumentAll1IEFF.html)



<html xmlns="[url]http://www.w3.org/1999/xhtml[/url]">
<head>
<title>Document.All Example</title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
</head>
<body>
<TABLE id="tableid4" BORDER=2 CELLPADDING=3></TABLE>
<h1>Example Heading</h1>
mark-to-win
<hr />
<p>This is a <em>paragraph</em>. It is only a <em>paragraph.</em></p>
<hr />
<script type="text/javascript">
<!--
var i,origLength;
origLength = document.all.length;
document.write('document.all.length='+origLength+"<br />");
for (i = 0; i < origLength; i++)
{
document.write("document.all["+i+"]="+document.all[i].tagName+"<br />");
}
/* "*" 传递给 getElementsByTagName() ,返回所有元素的列表*/
        var nlAll=document.getElementsByTagName("*");
        myAttributesObject = nlAll[5].attributes;
  //      myAttributesObject = document.all[5].attributes;
        for(i=0; i<myAttributesObject.length; i++)
        {
          
            myAttrib = myAttributesObject[i];
/*    Attribute.specified (Property)
         Whether the value has been specified or not.*/           
            if(myAttrib.specified==true)
            document.write("Attribute ("+myAttrib.name+"):"+ "its.value is "+myAttrib.value+"<br>");
        }
//-->
</script>
</body>
</html>
更多参考原文地址:http://www.mark-to-win.com/index.html?content=Javascript/jsUrl.html&chapter=Javascript/js6_web.html#documentall

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转载自blog.csdn.net/mark_to_win/article/details/88668193
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