1.引入 element-resize-detector依赖

npm i element-resize-detector --save

 

2.新建chart.resize.js文件

import echarts from "echarts";
import Vue from "vue";
import elementResizeDetectorMaker from "element-resize-detector";

export var version = "0.0.1";
var compatible = /^2\./.test(Vue.version);
if (!compatible) {
Vue.util.warn(
"vue echarts resize directive " +
version +
" only supports Vue 2.x, and does not support Vue " +
Vue.version
);
}
let HANDLER = "_vue_echarts_resize_handler";

function bind(el) {
unbind(el);
el[HANDLER] = function() {
let chart = echarts.getInstanceByDom(el);
if (!chart) {
return;
}
chart.resize();
};
//监听window窗体变化，更新echarts大小
//window.addEventListener("resize", el[HANDLER])
//监听绑定的div大小变化，更新echarts大小
elementResizeDetectorMaker().listenTo(el, el[HANDLER]);
}
function unbind(el) {
//window.removeEventListener("resize", el[HANDLER]);
elementResizeDetectorMaker().removeListener(el, el[HANDLER]);
delete el[HANDLER];
}
var directive = {
bind: bind,
unbind: unbind
};
Vue.directive("on-echart-resize", directive);

 

3.在 .vue 引入 import "../../utils/chart.resize";

4.需要使用的文件 加上 v-on-echart-resize

<div id="lineChart" ref="lineChart" v-on-echart-resize></div>

 

5.在mounted()中:

const elementResizeDetectorMaker = require("element-resize-detector");

let erd = elementResizeDetectorMaker();
erd.listenTo(this.$refs.lineChart, () => {
this.$nextTick(function () {
const lineChart = this.$echarts.init(this.$refs.lineChart);
//使echarts尺寸重置
lineChart.resize();
});
});