Exploring the benefits of utilizing ChartJs within a VueJs component

I'm currently working on using Chartjs to create and control a chart within a Vue component. I'm feeling a bit lost as to where exactly in the script tags I should initialize the chart instance 

var myChart = new Chart(ctx, {...});
after importing the chartjs library. My project is utilizing a Vue CLI Webpack setup.

  1. In essence, I'm unsure whether I should initialize it inside or outside of the export default {} block. And if it's inside, should it be right after opening the curly braces or perhaps inside the data() function?

  2. Additionally, are the actual values for the chart supposed to be within the same scope where I initialize the chart instance?

  3. I would greatly appreciate help on how to dynamically change the values of the bars in the chart by inputting values from fields below the chart.

This question is part of a test task for a Junior Front-end developer position. Any assistance would be incredibly valuable!

Thank you in advance!

javascriptvue.jschart.jsvuetify.js

Answer №1

To begin setting up your component, make sure to import the Chart module before declaring the export default {}.

import Chart from 'chart.js';
export default {}

Assuming this is your current template:

<template>
  <div id="app">
    <canvas id="your-chart"></canvas>
  </div>
</template>

You can proceed by adding a method that will be responsible for creating the chart:

methods: {
  createChart(chartId, chartData) {
    const ctx = document.getElementById(chartId);
    const myChart = new Chart(ctx, {
      type: chartData.type,
      data: chartData.data,
      options: chartData.options,
    });
  }
}

Invoke this method within the mounted lifecycle of your component:

mounted() {
  const data = { // chart object }
  this.createChart('planet-chart', data);
}

Alternatively, you have the option to utilize a vue wrapper designed for Chart.js

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