7.04 通用方法获取和设置元素属性
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<input type="text" class="zxw51" name="zxw" id="wyzxw" value="我要好好学习" abc="1123" />
<script type="text/javascript">
var z=document.getElementById("wyzxw")
document.write("<br>");
//获取和设置元素属性的通用方法（推荐使用）
//1、获取任意属性：元素.getAttribute("属性名")
var a=z.getAttribute("abc")
document.write("abc的值是：",a,"<br>");
var b=z.getAttribute("class")
document.write("class的值是：",b,"<br>");
//2、设置任意属性：元素.setAttribute("属性名","属性值")
z.setAttribute("class","zxw51老六")
document.write("class的值是：",z.getAttribute("class"),"<br>");
z.setAttribute("title","老六凉了")
document.write("class的值是：",z.getAttribute("title"),"<br>");
</script>
</body>
</html>