js总结33 :javascript-DOM节点属性

时间：2022-07-07 12:28:08

1 设置节点属性三个方法:

获取：getAttribute(名称)

设置：setAttribute(名称, 值)

删除：removeAttribute(名称)

举个例子:

<!DOCTYPE html>

<html>

<head lang="en">

    <meta charset="UTF-8">

    <title></title>

    <script>

window.onload = function () {

    var eleNode = document.getElementsByTagName("img")[0];

    //1.元素节点.属性或者元素节点[属性]

            eleNode.src = "image/aaa.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");

            eleNode.setAttribute("ccc","ddd");

            eleNode.removeAttribute("id");

        }

   </script>

</head>

<body>

<img src="data:image/aaa.png" class="box" title="图片" alt="aaa" id="aaa"/>

</body>

</html>

相关文章