Question

echarts图表怎么设置自定义属性并获取自定义属性的值？

Answer 1

data中都是可以自定义属性的，例如：
data:[
{value:0, name:'打开', myId:4},
{value:0, name:'离线', myId:5},
{value:0, name:'关闭', myId:6},
],
Chart.on('click', function (params) {
alert(params.data.myId);//输出自定义的myId值
});

Answer 2

<script>
var testEle = document.getElementById("test");
testEle.setAttribute("demo");
</script>

<a href="#" id="test" demo="1" onclick="alert(this.attributes['demo'].nodeValue)">（1）有</a>

<a href="#" id="test" demo="2" onclick="alert(this.attributes['demo'].nodeValue)">（2）无</a>