JS获取自定义属性data值

作者: beijing_beijing | 来源:发表于2017-06-02 16:02 被阅读0次

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<div id="tree" data-leaves="47" data-plant-height="2.4m"></div>
<script>
    var tree = document.getElementById("tree");
    //getAttribute()取值属性
    console.log(tree.getAttribute("data-leaves"));
    console.log(tree.getAttribute("data-plant-height"));
    //setAttribute()赋值属性
    tree.setAttribute("data-leaves","48");

    //data-前缀属性可以在JS中通过dataset取值，更加方便
    console.log(tree.dataset.leaves);
    console.log(tree.dataset.plantHeight);
    //赋值
    tree.dataset.plantHeight = "3m";
    tree.dataset.leaves--;
    //新增data属性
    tree.dataset.age = "100";
    //删除，设置成null，或者delete
    tree.dataset.leaves = null;
    delete tree.dataset.age;

    //jQuery的data方法
    var $tree = $('#tree');
    console.log($tree.data("plant-height"));
</script>

</body>
</html>