Vue chartJS/legacy change Legend Legend

Question

我正在与Vue-图表JS与Laravel后端的小项目工作。我使用的是从vue-chartjs/导入的vue2图表。所以，我想把“传奇”标签移到图表的底部。

我试图将legend: {position: "bottom",},添加到图表选项中，但它没有工作。还有别的办法吗？

<template>
  <Bar
    :chart-options="chartOptions"
    :chart-data="chartData"
    :chart-id="chartId"
    :dataset-id-key="datasetIdKey"
    :plugins="plugins"
    :css-classes="cssClasses"
    :styles="styles"
    :width="width"
    :height="height"
  />
</template>

<script>
import { Bar } from "vue-chartjs/legacy";

import {
  Chart as ChartJS,
  Title,
  Tooltip,
  Legend,
  BarElement,
  CategoryScale,
  LinearScale,
} from "chart.js";

ChartJS.register(
  Title,
  Tooltip,
  Legend,
  BarElement,
  CategoryScale,
  LinearScale
);

export default {
  name: "BarChart",
  components: {
    Bar,
  },
  props: {
    chartId: {
      type: String,
      default: "bar-chart",
    },
    datasetIdKey: {
      type: String,
      default: "label",
    },
    width: {
      type: Number,
      default: 400,
    },
    height: {
      type: Number,
      default: 400,
    },
    cssClasses: {
      default: "",
      type: String,
    },
    styles: {
      type: Object,
      default: () => {},
    },
    plugins: {
      type: Array,
      default: () => [],
    },
  },
  data() {
    return {
      chartData: {
        labels: [
          "January",
          "February",
          "March",
          "April",
          "May",
          "June",
          "July",
          "August",
          "September",
          "October",
          "November",
          "December",
        ],
        datasets: [
          {
            label: "Data One",
            backgroundColor: "#f87979",
            data: [40, 20, 12, 39, 10, 40, 39, 80, 40, 20, 12, 11],
          },
        ],
      },
      chartOptions: {
        responsive: true,
        maintainAspectRatio: false,
        legend: {
          position: "bottom",
        },
      },
    };
  },
};
</script>

Answer 1

您需要添加一个插件对象并在其中移动图例。

chartOptions: {
  responsive: true,
  maintainAspectRatio: false,
  plugins: {
    legend: {
      position: "bottom",
    }
  }
},

Answer 2

如果有些人在一些图表上使用vue-chartjs并在一些图表上使用类型记录环境，我的两分钱，将图例作为chartOptions.plugins内部的一个支柱会抛出一个linter类型错误：

'plugins.legend.position‘的类型在这些types.ts(2322)之间不兼容

因此，您只需按以下方式强制执行：(这不是正确的方法，但我没有找到任何解决办法)

chartOptions: {
  responsive: true,
  maintainAspectRatio: false,
  plugins: {
    legend: {
      position: "bottom" as const,
    }
  }
},