you will not report an error when you just enter this page, but you will only report an error if you reduce the size of the page.
has successfully introduced jquery
you will not report an error when you just enter this page, but you will only report an error if you reduce the size of the page.
has successfully introduced jquery
the current this is pointing incorrectly. The current this points to the inside of the monitor. You should use the outside pointer after let _ this=this;.
this points to
for reference only
<template>
<div :class="className" :style="{height:height,width:width}"></div>
</template>
<script>
import echarts from "echarts";
import { debounce } from "@/utils";
export default {
props: {
className: {
type: String,
default: "chart"
},
width: {
type: String,
default: "100%"
},
height: {
type: String,
default: "280px"
},
//
legendData: {
type: Array
},
//
series: {
type: Array
},
//
title: {
type: String,
default: ""
}
},
data() {
return {
chart: null
};
},
watch: {
//
title(val) {
this.reDraw();
},
//
series(val) {
this.reDraw();
},
//
legendData(val) {
this.reDraw();
}
},
mounted() {
this.initChart();
this.__resizeHanlder = debounce(() => {
if (this.chart) {
this.chart.resize();
}
}, 100);
window.addEventListener("resize", this.__resizeHanlder);
},
beforeDestroy() {
if (!this.chart) {
return;
}
window.removeEventListener("resize", this.__resizeHanlder);
this.chart.dispose();
this.chart = null;
},
methods: {
initChart() {
this.chart = echarts.init(this.$el, "macarons");
this.chart.setOption({
title: {
text: this.title,
left: "center",
bottom: 0,
textStyle: {
color: "black",
fontSize: 14
}
},
labelLine: {
normal: {
smooth: 0.2,
length: 0,
length2: 0
}
},
tooltip: {
trigger: "item",
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
left: "center",
bottom: 40,
textStyle: {
color: "-sharp999",
fontSize: 12
},
data: this.legendData
},
calculable: true,
series: this.series
});
},
//
reDraw() {
if (!this.chart) {
return;
}
window.removeEventListener("resize", this.__resizeHanlder);
this.chart.dispose();
this.chart = null;
this.initChart();
}
}
};
</script>
<style lang="scss" scoped>
</style>
export function debounce(func, wait, immediate) {
let timeout, args, context, timestamp, result
const later = function () {
//
const last = +new Date() - timestamp
// lastwait
if (last < wait && last > 0) {
timeout = setTimeout(later, wait - last)
} else {
timeout = null
// immediate===true
if (!immediate) {
result = func.apply(context, args)
if (!timeout) context = args = null
}
}
}callback function uses arrow function,
window.addEventListen("resize", () => {
this.chart.resize();
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