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shuizhe 2007-01-14
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你可以看看这个例子 它的意思是：获取对 ID 标签属性为指定值的第一个对象的引用。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="" />
<meta name="keywords" content="" />
<meta name="description" content="" />
</head>
<body>
<SCRIPT>
function fnGetId(){
var a = "javascript";
document.getElementById("f1").value = a;
}
</SCRIPT>
<input type="text" name="name" id="f1">
<INPUT TYPE="button" VALUE="Get Names" onclick="fnGetId()">
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="" />
<meta name="keywords" content="" />
<meta name="description" content="" />
</head>
<body>
<SCRIPT>
function fnGetId(){
var a = "javascript";
document.getElementById("f1").value = a;
}
</SCRIPT>
<input type="text" name="name" id="f1">
<INPUT TYPE="button" VALUE="Get Names" onclick="fnGetId()">
</body>
</html>
孟子E章 2007-01-14
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按对象的id找到对象
