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  • js获取自定义data属性

    <!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>
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  • 原文地址:https://www.cnblogs.com/QW-lzm/p/12373523.html
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