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>");
更多内容请见原文,文章转载自:https://blog.csdn.net/qq_43650923/article/details/103046612