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javascript - chart.js chart failing to render

I am trying to render out this chart to test and see if I can render charts on my website, later I will also, use Django models to get dynamic data, but before I can do that this thing is not rendering. I have tried many things, but I can hardly figure out the problem.

<div class="container">
  <canvas id="myChart" width ="400" height = "400"> </canvas>
</div>
<script>
$(document).ready(function(){
  var endpoint = "/api/networthchart/data/"
    
  $.ajax({
    method:"GET",
    url : endpoint,
    success: function(data){
      console.log(data)
    },
    error: function(errordata){
      console.log(errordata)
    },
  })

  var ctx = document.getElementById('myChart').getContext('2d');
  var myChart = new Chart(ctx, {
      type: 'bar',
      data: {
          labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
          datasets: [{
              label: '# of Votes',
              data: [12, 19, 3, 5, 2, 3],
              backgroundColor: [
                  'rgba(255, 99, 132, 0.2)',
                  'rgba(54, 162, 235, 0.2)',
                  'rgba(255, 206, 86, 0.2)',
                  'rgba(75, 192, 192, 0.2)',
                  'rgba(153, 102, 255, 0.2)',
                  'rgba(255, 159, 64, 0.2)'
              ],
              borderColor: [
                  'rgba(255, 99, 132, 1)',
                  'rgba(54, 162, 235, 1)',
                  'rgba(255, 206, 86, 1)',
                  'rgba(75, 192, 192, 1)',
                  'rgba(153, 102, 255, 1)',
                  'rgba(255, 159, 64, 1)'
              ],
              borderWidth: 1
          }]
      },
      options: {
          scales: {
              yAxes: [{
                  ticks: {
                      beginAtZero: true
                  }
              }]
          }
      }
  });
  
})
</script>

HTML: I think my import of the needed CDNs is not proper, take a look at this and tell me what I am doing wrong.

main.html

{% load static %}

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Stock Trading Website</title>
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="{%static "/css/main.css"%}">

        <!-- Compiled and minified JavaScript -->
        <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
        <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
        <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
        <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
       
    </head>
    <body>
   
    {% include "accounts/navbar.html" %}

    {% block content %}

    {% endblock %}
    
    </body>

</html>

chart.html

{% extends 'accounts/main.html' %} 
{% block content %}

<script>
$(document).ready(function(){
  var endpoint : "/api/networthchart/data/"
    
  $.ajax({
    method:"GET",
    url: endpoint,
    success: function(data){
      console.log(data)
    },
    error: function(errordata){
      console.log(errordata)
    },
  })

  var ctx = document.getElementById('myChart').getContext('2d');
  var myChart = new Chart(ctx, {
      type: 'bar',
      data: {
          labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
          datasets: [{
              label: '# of Votes',
              data: [12, 19, 3, 5, 2, 3],
              backgroundColor: [
                  'rgba(255, 99, 132, 0.2)',
                  'rgba(54, 162, 235, 0.2)',
                  'rgba(255, 206, 86, 0.2)',
                  'rgba(75, 192, 192, 0.2)',
                  'rgba(153, 102, 255, 0.2)',
                  'rgba(255, 159, 64, 0.2)'
              ],
              borderColor: [
                  'rgba(255, 99, 132, 1)',
                  'rgba(54, 162, 235, 1)',
                  'rgba(255, 206, 86, 1)',
                  'rgba(75, 192, 192, 1)',
                  'rgba(153, 102, 255, 1)',
                  'rgba(255, 159, 64, 1)'
              ],
              borderWidth: 1
          }]
      },
      options: {
          scales: {
              yAxes: [{
                  ticks: {
                      beginAtZero: true
                  }
              }]
          }
      }
  });
  
})
</script>

{% endblock %}
question from:https://stackoverflow.com/questions/65903150/chart-js-chart-failing-to-render

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1 Answer

0 votes
by (71.8m points)

You have syntax error. Change url = endpoint to url: endpoint :)

$(document).ready(function(){
  var endpoint = "/api/networthchart/data/"
    
  $.ajax({
    method:"GET",
    url: endpoint,
    success: function(data){
      console.log(data)
    },
    error: function(errordata){
      console.log(errordata)
    },
  })

  var ctx = document.getElementById('myChart').getContext('2d');
  var myChart = new Chart(ctx, {
      type: 'bar',
      data: {
          labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
          datasets: [{
              label: '# of Votes',
              data: [12, 19, 3, 5, 2, 3],
              backgroundColor: [
                  'rgba(255, 99, 132, 0.2)',
                  'rgba(54, 162, 235, 0.2)',
                  'rgba(255, 206, 86, 0.2)',
                  'rgba(75, 192, 192, 0.2)',
                  'rgba(153, 102, 255, 0.2)',
                  'rgba(255, 159, 64, 0.2)'
              ],
              borderColor: [
                  'rgba(255, 99, 132, 1)',
                  'rgba(54, 162, 235, 1)',
                  'rgba(255, 206, 86, 1)',
                  'rgba(75, 192, 192, 1)',
                  'rgba(153, 102, 255, 1)',
                  'rgba(255, 159, 64, 1)'
              ],
              borderWidth: 1
          }]
      },
      options: {
          scales: {
              yAxes: [{
                  ticks: {
                      beginAtZero: true
                  }
              }]
          }
      }
  });
  
})

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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