Vue Chart.js组件不呈现

Question

仪表板获取具有10个元素的数据数组作为chdata属性.每0.5秒阵列更新一次新项目.我可以看到,数据在数据集中正在变化,但图表没有显示.

Uncaught TypeError: Cannot read property 'skip' of undefined悬停时也会出现此错误.

//LineChart.vue
<script>
import {
    Line,
    mixins
} from 'vue-chartjs'
export default Line.extend({
    mixins: [mixins.reactiveData],
    props: ["options"],
    data() {
       return {
            chartData: {
                labels: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'],
                datasets: [{
                    label: 'Data One',
                    borderColor: '#e67e22',
                    pointBackgroundColor: '#e67e22',
                    borderWidth: 1,
                    pointBorderColor: '#e67e22',
                    backgroundColor: 'transparent',
                    data: this.$root.$data.chdata
                }]
            },

         }
     },


    mounted() {
            this.renderChart(this.chartData, {
            responsive: true,
            maintainAspectRatio: false,
            animation: false,
            //Boolean - If we want to override with a hard coded scale
            scaleOverride: true,
            //** Required if scaleOverride is true **
            //Number - The number of steps in a hard coded scale
            scaleSteps: 20,
            //Number - The value jump in the hard coded scale
            scaleStepWidth: 10,
            //Number - The scale starting value
            scaleStartValue: 0
        });
    },
    watch: {
        chartData: function() {
            this._chart.destroy()
            this.renderChart(this.data, this.options)
            // this._chart.update()
        }
    }


});
</script>

我做到了这个mounted():

var self = this;
        self.set = setInterval(function() {
            self._chart.update()
        }, 200);

而且我对此并不满意.

Answer 1

问题是，您没有更新标签。您在标签数组中定义了 10 个项目。这适用于 10 个数据条目。

如果将新条目推送到数据数组，则还需要添加新标签。否则，chart.js 将抛出此错误。