JS实现获取自定义属性data值的方法示例

<div id=\"tree\" data-leaves=\"47\" data-plant-height=\"2.4m\"></div>

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;

var $tree = $(\'#tree\');
console.log($tree.data(\"plant-height\"));