setAttribute :设置属性值
getAttribute :取出值
赋值....setAttribute("a","1") 将1赋值给a
取值....getAttribute("a") 取出a的值,为1
1.setAttribute 设置属性值
eg1:注意:a标签没有value属性,因此设置文本节点,用innerHTML
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<script type="text/javascript">
var main = document.body;
//创建链接
// function createa(url,text)
// {
// var a = document.createElement("a");
// a.href = url;
// a.innerHTML = text;
// a.style.color = "red";
// main.appendChild(a);
// }
function createa(url,text)
{
var a = document.createElement("a");
a.setAttribute("href","url");
// a.innerHTML = text;
ahref.setAttribute("innerHTML","text");
a.style.color = "red";
main.appendChild(a);
}
// 调用函数创建链接
createa("http://www.imooc.com","慕课网");
</script>
</body>
</html>
eg2: input标签有value属性,则可用setAttribute