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| <template>
| <div class="module-box">
| <div class="chang-btn"
| @click="
| isUp = !isUp;
| setOption();
| "
| >
| {{ isUp ? '升序▲' : '降序▼' }}
| </div>
| <div class="city-score" ref="cityScore"></div>
| </div>
| </template>
|
| <script>
| import echarts from 'echarts';
| let cityChart = null;
| export default {
| name: 'city-score',
| data() {
| return {
| isUp: true, // 当前是否为升序
| // 缓存下来的异步获取的数据列表
| dataList: [
| {
| name: '郑州',
| score: 153,
| },
| {
| name: '洛阳',
| score: 153,
| },
| {
| name: '南阳',
| score: 243,
| },
| {
| name: '信阳',
| score: 53,
| },
| ],
| };
| },
| methods: {
| // 绘制图表
| setOption() {
| if (!cityChart) {
| return;
| }
| const sortArr = this.dataList.sort((a, b) => (this.isUp ? a.score - b.score : b.score - a.score)); // 排序后的数据列表
| const nameArr = sortArr.map((i) => i.name);
| const dataArr = sortArr.map((i) => i.score);
| let maxScore = Math.floor(Math.max(...dataArr) * 1.4); // 为了视觉阴影效果 留点余地
| maxScore = sortArr.map(() => maxScore);
| cityChart.setOption({
| tooltip: {
| trigger: 'axis',
| },
| grid: {
| right: 20,
| left: 50,
| top: 30,
| bottom: 20,
| },
| xAxis: [
| {
| type: 'category',
| axisLine: {
| lineStyle: {
| color: '#0D496E',
| },
| },
| axisLabel: {
| show: true,
| textStyle: {
| fontSize: 12,
| color: '#ADB1B4',
| },
| },
| data: nameArr,
| },
| // 生成背景阴影需要
| {
| type: 'category',
| show: false,
| data: nameArr,
| },
| ],
| yAxis: {
| type: 'value',
| splitLine: {
| show: false,
| },
| axisLine: {
| show: false,
| },
| axisLabel: {
| show: true,
| textStyle: {
| fontSize: 12,
| color: '#ADB1B4',
| },
| },
| },
| series: [
| {
| name: '评分',
| data: dataArr,
| type: 'pictorialBar',
| barWidth: 48,
| symbol: 'triangle',
| label: {
| show: true,
| position: 'top',
| textStyle: {
| fontSize: 16,
| color: '#fff',
| },
| },
| itemStyle: {
| color: {
| type: 'linear',
| x: 0,
| y: 0,
| x2: 0,
| y2: 1,
| colorStops: [
| {
| offset: 0,
| color: 'rgba(30, 231, 231, 0.87)', // 0% 处的颜色
| },
| {
| offset: 1,
| color: 'rgba(30, 231, 231, 0)', // 100% 处的颜色
| },
| ],
| global: false, // 缺省为 false
| },
| },
| },
| // 制造背景阴影
| {
| tooltip: {
| show: false,
| },
| xAxisIndex: 1,
| itemStyle: {
| color: 'rgba(180, 180, 180, 0.2)',
| },
| data: maxScore,
| barWidth: 48,
| emphasis: {
| itemStyle: {
| color: {
| type: 'linear',
| x: 0,
| x2: 0,
| y: 0,
| y2: 1,
| colorStops: [
| {
| offset: 0,
| color: 'rgba(64, 247, 176, 0.25)',
| },
| {
| offset: 1,
| color: 'rgba(17, 34, 64, 0.25)',
| },
| ],
| },
| },
| },
| type: 'bar',
| },
| ],
| });
| },
| },
| mounted() {
| // 监听屏幕宽度变化：当浏览器发生resize事件的时候，触发echart的resize事件，重绘canvas
| // 基于准备好的dom，初始化echarts实例
| cityChart = echarts.init(this.$refs.cityScore);
| window.addEventListener('resize', () => {
| this.$nextTick(() => {
| cityChart.resize();
| });
| });
| this.setOption();
| },
| };
| </script>
|
| <style lang="scss" scoped>
| .module-box {
| width: 100%;
| height: 100%;
| position: relative;
| }
| .city-score {
| width: 100%;
| height: 100%;
| }
|
| .chang-btn {
| position: absolute;
| white-space: nowrap;
| right: -5px;
| top: -5px;
| font-size: 14px;
| color: #ADB1B4;
| cursor: pointer;
| z-index: 9;
| }
| </style>
|
|
