具体操作
-
下载 echarts-for-weixin 。
-
把其 ec-canvas 目录移动到 mpvue 项目的 static 目录下。
-
对 ec-canvas/ec-canvas.js 进行小调整,考虑提 pr 到 ec-canvas。
修改 ready 为异步获取数据。
ready: function () {
// 异步获取
setTimeout(() => {
if (!this.data.ec) {
console.warn('组件需绑定 ec 变量,例:<ec-canvas id="mychart-dom-bar" '
+ 'canvas-id="mychart-bar" ec="{{ ec }}"></ec-canvas>');
return;
}
if (!this.data.ec.lazyLoad) {
this.init();
}
}, 10)
}
为 init 添加接收 options 传参
var query = wx.createSelectorQuery().in(this);
query.select('.ec-canvas').boundingClientRect(res => {
if (typeof callback === 'function') {
this.chart = callback(canvas, res.width, res.height);
}
else if (this.data.ec && this.data.ec.onInit) {
this.chart = this.data.ec.onInit(canvas, res.width, res.height);
}
else if (this.data.ec && this.data.ec.options) {
// 添加接收 options 传参
const ec = this.data.ec
function initChart(canvas, width, height) {
const chart = echarts.init(canvas, null, {
width: width,
height: height
});
canvas.setChart(chart);
chart.setOption(ec.options);
return chart;
}
this.chart = initChart(canvas, res.width, res.height);
}
}).exec();
-
创建
pages/bar 页面,目录如下:
.
└── pages
└── bar
├── index.vue
└── main.js
-
在 main.js 中引入微信小程序的自定义组件
import Vue from 'vue'
import App from './index'
const app = new Vue(App)
app.$mount()
// 添加 config json
export default {
config: {
// 这儿添加要用的小程序组件
usingComponents: {
'ec-canvas': '../../../static/ec-canvas/ec-canvas'
}
}
}
-
在 app.vue 中添加 options、template 等相关配置
<template>
<div>
<div class="container">
<ec-canvas class="canvas" id="mychart-dom-bar" canvas-id="mychart-bar" :ec="ec"></ec-canvas>
</div>
</div>
</template>
<script>
const options = {
// more code ...
}
export default {
data () {
return {
ec: {
// 传 options
options: options,
}
}
}
}
</script>
<style>
ec-canvas {
width: 400px;
height: 400px;
}
</style>
Build Setup
# install dependencies
npm install
# serve with hot reload at localhost:8080
npm run dev
# build for production with minification
npm run build
# build for production and view the bundle analyzer report
npm run build --report
|