<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="box" kerwin="hello"> hello </div>
<input type="text" value="111111" id="username">
<input type="checkbox" checked="checked" id="rember">
<img src="" alt="" id="photo">
<ul>
<li>111111</li>
<li>222222</li>
<li>333333</li>
</ul>
<!-- 自定义标签data- -->
<div id="box2" data-kerwin="hello" data-tiechui="hello2" data-xiaoming="hello3"></div>
<script>
// 自定义属性
// 设置属性
box.setAttribute("tiechui","111111111")
// 获取属性
console.log(box.getAttribute("tiechui"))
// 删除属性
box.removeAttribute("tiechui")
box.removeAttribute("kerwin")
// var oitems = document.getElementsByTagName("li")
// for(var i=0;i<oitems.length;i++){
// oitems[i].setAttribute("kkindex",i)
// }
// h5 data-自定义属性的特有标签
// 获取
console.log(box2.dataset)
// 设置
box2.dataset.xiaoming = "hello3333"
// 删除
delete box2.dataset.xiaoming
delete box2.dataset.kerwin
delete box2.dataset.tiechui
var oitems = document.getElementsByTagName("li")
for(var i=0;i<oitems.length;i++){
oitems[i].dataset.index = i
}
</script>
</body>
</html>
