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How to use HTML, CSS and jQuery to implement advanced chart display functions

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Oct 27, 2023 pm 03:58 PM

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How to use HTML, CSS and jQuery to implement advanced chart display functions

How to use HTML, CSS and jQuery to realize the advanced functions of chart display

With the continuous growth and importance of data, chart display has become an important part of web design. an important part of. Through chart display, people can understand and analyze data more intuitively and easily. In this article, we will explore how to use HTML, CSS and jQuery to implement some advanced chart display functions and provide specific code examples.

1. HTML basic structure

Before we start to implement chart display, we need to build a basic HTML structure first. Here is a simple infrastructure example:

<!DOCTYPE html>
<html>
<head>
  <title>图表展示</title>
  <link rel="stylesheet" type="text/css" href="style.css">
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
  <script src="script.js"></script>
</head>
<body>
  <div id="chart"></div>
</body>
</html>

In this example, we include an external CSS style file style.css and an external JavaScript file script. js. This way we can separate style and logic code, making the code structure clearer.

2. CSS Style

Next, we can use CSS style to beautify our charts. The following is a simple CSS style example:

#chart {
  width: 500px;
  height: 300px;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
}

In this example, we define a container with the ID chart and set styles such as width, height, border and background color. You can customize the style according to your needs to make the chart look more beautiful.

3. Use jQuery to realize chart display

In chart display, the most common chart types are bar chart, line chart and pie chart. Below we will introduce how to use jQuery to realize the display function of these charts.

Histogram

$(document).ready(function() {
  var data = [5, 10, 15, 20, 25]; // 模拟数据

  var chart = $('<div class="bar-chart"></div>'); // 创建柱状图容器
  $('#chart').append(chart);

  // 遍历数据，生成每一个柱子
  for (var i = 0; i < data.length; i++) {
    var bar = $('<div class="bar"></div>').css('height', data[i] + 'px');
    chart.append(bar);
  }
});

In this example, we use a div element as the container of the histogram and generate it by traversing the data A series of columns of varying heights. You can adjust it according to your own data and needs to make the histogram display more accurate and visual.

Line chart

$(document).ready(function() {
  var data = [
    { x: 0, y: 10 },
    { x: 1, y: 15 },
    { x: 2, y: 5 },
    { x: 3, y: 20 },
    { x: 4, y: 12 }
  ]; // 模拟数据

  var chart = $('<div class="line-chart"></div>'); // 创建折线图容器
  $('#chart').append(chart);

  // 生成坐标轴
  var axisX = $('<div class="axis-x"></div>');
  var axisY = $('<div class="axis-y"></div>');
  chart.append(axisX).append(axisY);

  // 根据数据生成折线
  for (var i = 0; i < data.length; i++) {
    var point = $('<div class="point"></div>')
      .css('left', data[i].x + '0%')
      .css('bottom', data[i].y + '0%');
    chart.append(point);
  }
});

In this example, we use a div element as the container of the line chart and generate a line chart based on the data. Series points, achieve polyline effect through CSS style. You can adjust it according to your own data and needs to make the line chart display more accurate and visual.

pie chart

$(document).ready(function() {
  var data = [
    { label: 'A', value: 20 },
    { label: 'B', value: 30 },
    { label: 'C', value: 50 }
  ]; // 模拟数据

  var chart = $('<div class="pie-chart"></div>'); // 创建饼状图容器
  $('#chart').append(chart);

  var sum = data.reduce(function(prev, current) {
    return prev + current.value;
  }, 0); // 计算数据总和

  var start = 0;
  for (var i = 0; i < data.length; i++) {
    var angle = 360 * data[i].value / sum;

    var slice = $('<div class="slice"></div>')
      .css('transform', 'rotate(' + start + 'deg)')
      .css('width', angle + 'deg');
    chart.append(slice);

    start += angle;
  }
});

In this example, we use a div element as the container of the pie chart and generate it based on the data A series of sectors. The fan-shaped display effect is achieved through CSS styles and transform attributes. You can adjust it according to your own data and needs to make the pie chart display more accurate and visual.

4. Summary

In this article, we introduced how to use HTML, CSS and jQuery to implement advanced functions of chart display. We introduced the implementation methods of bar charts, line charts, and pie charts respectively, and provided specific code examples. By studying these examples, we can better understand and master how to use HTML, CSS and jQuery to implement advanced functions of chart display, and adjust and expand according to our own needs. I hope this article can be helpful to you, and I wish you greater success on the road to chart display!

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