如何通过DOM-Container的id访问一个Apache的ECharts？

Question

I draw many piecharts on the map, at some point in time I need to update those piecharts using setOption . All I found they suggest saving the echart object inside the variable then update base on variables like below:

//Create
let echartsObj = echarts.init(document.getElementById("someId"));
    ...
};
//Update
echartsObj.setOption(option)

But this is not working for me because I have many echart instances and I should match them base on their id like below:

//It is not updating but I want something like that for updating echarts
someFunctionOrInstance("#echartId").setOption(option)

As I know, this approach is doable with other chart libraries like chart.js

Answer 1

setOption is a method of the object that echarts.init returned, but $("#echartId") returns a jQuery instance.

One option would be to store these into an object, using the ID as key - then you have easy access to them, directly via that.

The other would be to use theecharts.getInstanceByDom method - that does not select by ID directly, but needs to get a div or canvas element passed in, and will then return the correct instance for that element.

Answer 2

window.echartid.setOption(option)

this will do.