<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script>
window.onload = function () {
var eleNode = document.getElementsByTagName("img")[0];
//属性、赋值获取两种方式
//1.元素节点.属性或者元素节点[属性]
eleNode.src = "image/jd2.png";
eleNode.aaa = "bbb";
console.log(eleNode.aaa);
console.log(eleNode.src);
console.log(eleNode.tagName);
console.log(eleNode["title"]);
console.log(eleNode["className"]);
console.log(eleNode["alt"]);
//2.元素节点.方法();
console.log(eleNode.getAttribute("id"));
eleNode.setAttribute("id","你好");
console.log(eleNode.getAttribute("id"));
eleNode.setAttribute("ccc","ddd");
//
eleNode.removeAttribute("id");
console.log(eleNode.getAttribute("id"));
}
</script>
</head>
<body>
<img src="image/jd1.png" class="box" title="图片" alt="京东狗" id="aaa"/>
</body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="box" title="主体" class="asdfasdfadsfd">我爱你中国</div>
<script>
//两种方式不能交换使用，赋值和获取值必须使用用一种方法。
var div = document.getElementById("box");
//元素节点.属性（元素节点[属性]）:绑定的属性值不会出现在标签上。
div.aaaa = "1111";
console.log(div.aaaa);
//get/set/removeAttribut: 绑定的属性值会出现在标签上。
div.setAttribute("bbbb","2222");
console.log(div.getAttribute("aaaa"));
console.log(div.bbbb);
console.log(div.getAttribute("bbbb"));
</script>
</body>
</html>
节点属性
