Array of all HTML tags in the document.Collection of all elements contained by the object.
"[url]http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd[/url]">
<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>
<h1>Example Heading</h1>
<hr />
<p>This is a <em>paragraph</em>. It is only a <em>paragraph.</em></p>
<p>Yet another <em>paragraph.</em></p>
<p>This final <em>paragraph</em> has <em id="special">special emphasis.</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 />");
}
//-->
</script>
</body>
</html>
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
document.all.length=18
document.all[0]=!
document.all[1]=HTML
document.all[2]=HEAD
document.all[3]=TITLE
document.all[4]=META
document.all[5]=BODY
document.all[6]=H1
document.all[7]=HR
document.all[8]=P
document.all[9]=EM
document.all[10]=EM
document.all[11]=P
document.all[12]=EM
document.all[13]=P
document.all[14]=EM
document.all[15]=EM
document.all[16]=HR
document.all[17]=SCRIPT
(注意它只可以在IE上运行)
例2(访问一个特定元素)
"[url]http://www.w3.org/TR/html4/loose.dtd[/url]">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>单击DIV变色</title>
<style type="text/css">
<!--
#docid{
height:400px;
width:400px;
background-color:#999;}
-->
</style>
</head>
<body><div id="docid" name="docname" onClick="bgcolor()"></div>
</body>
</html>
<script language="javascript" type="text/javascript">
<!--
function bgcolor(){
document.all[7].style.backgroundColor="#000"
}
-->
</script>
<div id="docid" name="docname"></div>,你可以通过这个DIV的ID,NAME或INDEX属性访问这个DIV:
document.all["docname"]
document.all.item("docid")
document.all.item("docname")
document.all[7]
document.all.tags("div")则返回文档中所有DIV数组,本例中只有一个DIV,所以用document.all.tags("div")[0]就可以访问了。
"[url]http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd[/url]">
<html xmlns="[url]http://www.w3.org/1999/xhtml[/url]">
<head>
<title>Document.All Example #2</title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
</head>
<body>
<!-- Works in Internet Explorer and compatible -->
<h1 id="heading1" align="center" style="font-size: larger;">DHTML Fun!!!</h1>
<form name="testform" id="testform" action="#" method="get">
<br /><br />
<input type="button" value="Align Left"
onclick="document.all['heading1'].align='left';" />//改变<h1></h1>标签对中的align属性的值,下面的代码作用相同
<input type="button" value="Align Center"
onclick="document.all['heading1'].align='center';" />
<input type="button" value="Align Right"
onclick="document.all['heading1'].align='right';" />
<br /><br />
<input type="button" value="/Bigger"
onclick="document.all['heading1'].style.fontSize='xx-large';" />
<input type="button" value="/Smaller"
onclick="document.all['heading1'].style.fontSize='xx-small';" />
<br /><br />
<input type="button" value="Red"
onclick="document.all['heading1'].style.color='red';" />
<input type="button" value="/Blue"
onclick="document.all['heading1'].style.color='blue';" />
<input type="button" value="/Black"
onclick="document.all['heading1'].style.color='black';" />
<br /><br />
<input type="text" name="userText" id="userText" size="30" />
<input type="button" value="Change Text"
onclick="document.all['heading1'].innerText=document.testform.userText.value;" />//改变<h1></h1>标签对中的文本内容
</form>
</body>
</html>
Most third-party browsers are “strict standards” implementations, meaning that they implement W3C and ECMA standards and ignore most of the proprietary object models of Internet Explorer and Netscape.If the demographic for your Web site includes users likely to use less common browsers, such as Linux aficionados, it might be a good idea to avoid IE-specific features and use the W3C DOM instead. by Internet Explorer 6, we see that IE implements significant portions of the W3C DOM.
"[url]http://www.w3.org/TR/html4/loose.dtd[/url]">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>ById</title>
<style type="text/css">
<!--
#docid{
height:400px;
width:400px;
background-color:#999;}
-->
</style>
</head>
<body><div id="docid" name="docname" onClick="bgcolor()"></div>
</body>
</html>
<script language="javascript" type="text/javascript">
<!--
function bgcolor(){
document.getElementById("docid").style.backgroundColor="#000"
}
-->
</script>
<div name="docname" id="docid2"></div>
<html xmlns="[url]http://www.w3.org/1999/xhtml[/url]">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Byname,tag</title>
<style type="text/css">
<!--
#docid1,#docid2{
margin:10px;
height:400px;
width:400px;
background-color:#999;}
-->
</style>
</head>
<body>
<div name="docname" id="docid1" onClick="bgcolor()"></div>
<div name="docname" id="docid2" onClick="bgcolor()"></div>
</body>
</html>
<script language="javascript" type="text/javascript">
<!--
function bgcolor(){
var docnObj=document.getElementsByName("docname");
docnObj[0].style.backgroundColor = "black";
docnObj[1].style.backgroundColor = "black";
}
-->
</script>
<html xmlns="[url]http://www.w3.org/1999/xhtml[/url]">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Byname,tag</title>
<style type="text/css">
<!--
#docid1,#docid2{
margin:10px;
height:400px;
width:400px;
background-color:#999;}
-->
</style>
</head>
<body>
<div name="docname" id="docid1" onClick="bgcolor()"></div>
<div name="docname" id="docid2" onClick="bgcolor()"></div>
</body>
</html>
<script language="javascript" type="text/javascript">
<!--
function bgcolor(){
var docnObj=document.getElementsByTagName("div");
docnObj[0].style.backgroundColor = "black";
docnObj[1].style.backgroundColor = "black";
}
-->
</script>