Data Visualization with jQuery

Data visualization is a crucial aspect of web development that helps users understand and interpret data through graphical representations. This chapter will guide you through the process of creating data visualizations using jQuery, from basic concepts to advanced techniques. We will cover a variety of methods and libraries to make data visualization easy and effective with jQuery.

Basics of jQuery

What is jQuery?

jQuery is a JavaScript library designed to simplify HTML document manipulation, event handling, and animation. It offers a straightforward API for working with HTML, CSS, and JavaScript, making it easier to develop interactive web applications.

Basic jQuery Syntax

Here’s a simple example of jQuery in action:

				
					<!DOCTYPE html>
<html>
<head>
    <title>jQuery Basics</title> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head>
<body>
    <button id="showMessage">Click Me</button>
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</html>

Explanation:

$(document).ready(function(){ ... }); ensures that the DOM is fully loaded before running the code.
$("#showMessage").click(function(){ ... }); attaches a click event handler to the button with the ID showMessage.
$("#message").text("Hello, world!"); changes the text of the paragraph with the ID message when the button is clicked.

Output: When the button is clicked, the text “Hello, world!” will appear in the paragraph below it.

Introduction to Data Visualization Libraries

While jQuery itself does not include built-in data visualization capabilities, it can be combined with various libraries to create charts and graphs. Here, we will introduce some popular libraries for data visualization

Chart.js

Chart.js is a flexible and simple JavaScript charting library that works well with jQuery.

Installation:

Include Chart.js in your project using a CDN:

				
					<script type="litespeed/javascript" data-src="https://cdn.jsdelivr.net/npm/chart.js"></script>

Basic Example:

				
					<!DOCTYPE html>
<html>
<head>
    <title>Chart.js Example</title> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://cdn.jsdelivr.net/npm/chart.js"></script> </head>
<body>
    <canvas id="myChart" width="400" height="200"></canvas> <script type="litespeed/javascript">$(document).ready(function(){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:{y:{beginAtZero:!0}}}})})</script> <script data-no-optimize="1">!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).LazyLoad=e()}(this,function(){"use strict";function e(){return(e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n,a=arguments[e];for(n in a)Object.prototype.hasOwnProperty.call(a,n)&&(t[n]=a[n])}return t}).apply(this,arguments)}function i(t){return e({},it,t)}function o(t,e){var n,a="LazyLoad::Initialized",i=new t(e);try{n=new CustomEvent(a,{detail:{instance:i}})}catch(t){(n=document.createEvent("CustomEvent")).initCustomEvent(a,!1,!1,{instance:i})}window.dispatchEvent(n)}function l(t,e){return t.getAttribute(gt+e)}function c(t){return l(t,bt)}function s(t,e){return function(t,e,n){e=gt+e;null!==n?t.setAttribute(e,n):t.removeAttribute(e)}(t,bt,e)}function r(t){return s(t,null),0}function u(t){return null===c(t)}function d(t){return c(t)===vt}function f(t,e,n,a){t&&(void 0===a?void 0===n?t(e):t(e,n):t(e,n,a))}function _(t,e){nt?t.classList.add(e):t.className+=(t.className?" 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</html>

Explanation:

var ctx = document.getElementById('myChart').getContext('2d'); retrieves the 2D rendering context for the canvas element.
new Chart(ctx, { ... }); creates a new Chart.js chart with the specified type and data.

Output: The canvas element will display a bar chart with different colors representing the data.

Highcharts

Highcharts is a powerful charting library that provides a wide range of chart types.

Installation:

Include Highcharts in your project using a CDN:

				
					<script type="litespeed/javascript" data-src="https://code.highcharts.com/highcharts.js"></script>

Basic Example:

				
					<!DOCTYPE html>
<html>
<head>
    <title>Highcharts Example</title> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://code.highcharts.com/highcharts.js"></script> </head>
<body>
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d=document.createElement("script");d.addEventListener("load",e),d.addEventListener("error",e),t.getAttributeNames().forEach(e=>{"type"!=e&&d.setAttribute("data-src"==e?"src":e,t.getAttribute(e))});let a=!(d.type="text/javascript");!d.src&&t.textContent&&(d.src=litespeed_inline2src(t.textContent),a=!0),t.after(d),t.remove(),a&&e()}function litespeed_inline2src(t){try{var d=urlCreator.createObjectURL(new Blob([t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1")],{type:"text/javascript"}))}catch(e){d="data:text/javascript;base64,"+btoa(t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1"))}return d}</script></body>
</html>

Explanation:

Highcharts.chart('container', { ... }); initializes a Highcharts chart in the div with the ID container.
The type specifies the chart type (line chart), and series provides the data to display.

Output: A line chart will be displayed showing the monthly average temperatures for Tokyo.

Advanced Data Visualization Techniques

With basic visualization techniques covered, let’s dive into more advanced features and integrations.

Dynamic Data Loading

You may want to load data dynamically from a server. Here’s how to do that with jQuery and Chart.js.

Example:

				
					<!DOCTYPE html>
<html>
<head>
    <title>Dynamic Chart.js Data</title> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://cdn.jsdelivr.net/npm/chart.js"></script> </head>
<body>
    <canvas id="dynamicChart" width="400" height="200"></canvas> <script type="litespeed/javascript">$(document).ready(function(){$.ajax({url:'data.json',method:'GET',dataType:'json',success:function(data){var ctx=document.getElementById('dynamicChart').getContext('2d');var dynamicChart=new Chart(ctx,{type:'pie',data:{labels:data.labels,datasets:[{data:data.values,backgroundColor:['rgba(255, 99, 132, 0.2)','rgba(54, 162, 235, 0.2)','rgba(255, 206, 86, 0.2)'],borderColor:['rgba(255, 99, 132, 1)','rgba(54, 162, 235, 1)','rgba(255, 206, 86, 1)']}]}})}})})</script> <script data-no-optimize="1">!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).LazyLoad=e()}(this,function(){"use strict";function e(){return(e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n,a=arguments[e];for(n in a)Object.prototype.hasOwnProperty.call(a,n)&&(t[n]=a[n])}return t}).apply(this,arguments)}function i(t){return e({},it,t)}function o(t,e){var n,a="LazyLoad::Initialized",i=new t(e);try{n=new CustomEvent(a,{detail:{instance:i}})}catch(t){(n=document.createEvent("CustomEvent")).initCustomEvent(a,!1,!1,{instance:i})}window.dispatchEvent(n)}function l(t,e){return t.getAttribute(gt+e)}function c(t){return l(t,bt)}function s(t,e){return function(t,e,n){e=gt+e;null!==n?t.setAttribute(e,n):t.removeAttribute(e)}(t,bt,e)}function r(t){return s(t,null),0}function u(t){return null===c(t)}function d(t){return c(t)===vt}function f(t,e,n,a){t&&(void 0===a?void 0===n?t(e):t(e,n):t(e,n,a))}function _(t,e){nt?t.classList.add(e):t.className+=(t.className?" 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</html>

Explanation:

The events option in the chart configuration adds an event listener for clicks on the chart.
An alert displays the category and value of the clicked bar.

Output: When a user clicks on a bar in the chart, an alert will show the category and value of the clicked bar

Combining jQuery with Other Visualization Techniques

In addition to charting libraries, jQuery can be combined with other visualization techniques such as data tables and maps.

DataTables Integration

DataTables is a jQuery plugin for creating interactive tables.

Installation:

Include DataTables in your project:

				
					<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.25/css/jquery.dataTables.min.css"> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://cdn.datatables.net/1.10.25/js/jquery.dataTables.min.js"></script>

Explanation:

$(document).ready(function(){ ... }); ensures that the DOM is fully loaded before running the code.
$("#showMessage").click(function(){ ... }); attaches a click event handler to the button with the ID showMessage.
$("#message").text("Hello, world!"); changes the text of the paragraph with the ID message when the button is clicked.

Output: When the button is clicked, the text “Hello, world!” will appear in the paragraph below it.

Basic Example:

				
					<!DOCTYPE html>
<html>
<head>
    <title>DataTables Example</title>
    <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.25/css/jquery.dataTables.min.css"> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://cdn.datatables.net/1.10.25/js/jquery.dataTables.min.js"></script> </head>
<body>
    <table id="example" class="display" style="width:100%">
        <thead>
            <tr>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Age</th>
                <th>Start date</th>
                <th>Salary</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>Tiger Nixon</td>
                <td>System Architect</td>
                <td>Edinburgh</td>
                <td>61</td>
                <td>2011/04/25</td>
                <td>$320,800</td>
            </tr>
            
        </tbody>
    </table> <script type="litespeed/javascript">$(document).ready(function(){$('#example').DataTable()})</script> <script data-no-optimize="1">!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).LazyLoad=e()}(this,function(){"use strict";function e(){return(e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n,a=arguments[e];for(n in a)Object.prototype.hasOwnProperty.call(a,n)&&(t[n]=a[n])}return t}).apply(this,arguments)}function i(t){return e({},it,t)}function o(t,e){var n,a="LazyLoad::Initialized",i=new t(e);try{n=new CustomEvent(a,{detail:{instance:i}})}catch(t){(n=document.createEvent("CustomEvent")).initCustomEvent(a,!1,!1,{instance:i})}window.dispatchEvent(n)}function l(t,e){return t.getAttribute(gt+e)}function c(t){return l(t,bt)}function s(t,e){return function(t,e,n){e=gt+e;null!==n?t.setAttribute(e,n):t.removeAttribute(e)}(t,bt,e)}function r(t){return s(t,null),0}function u(t){return null===c(t)}function d(t){return c(t)===vt}function f(t,e,n,a){t&&(void 0===a?void 0===n?t(e):t(e,n):t(e,n,a))}function _(t,e){nt?t.classList.add(e):t.className+=(t.className?" 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Delayed"),litespeed_ui_events.forEach(e=>{window.removeEventListener(e,litespeed_load_delayed_js_force,{passive:!0})}),document.querySelectorAll("iframe[data-litespeed-src]").forEach(e=>{e.setAttribute("src",e.getAttribute("data-litespeed-src"))}),"loading"==document.readyState?window.addEventListener("DOMContentLoaded",litespeed_load_delayed_js):litespeed_load_delayed_js()}litespeed_ui_events.forEach(e=>{window.addEventListener(e,litespeed_load_delayed_js_force,{passive:!0})});async function litespeed_load_delayed_js(){let t=[];for(var d in document.querySelectorAll('script[type="litespeed/javascript"]').forEach(e=>{t.push(e)}),t)await new Promise(e=>litespeed_load_one(t[d],e));document.dispatchEvent(new Event("DOMContentLiteSpeedLoaded")),window.dispatchEvent(new Event("DOMContentLiteSpeedLoaded"))}function litespeed_load_one(t,e){console.log("[LiteSpeed] Load ",t);var d=document.createElement("script");d.addEventListener("load",e),d.addEventListener("error",e),t.getAttributeNames().forEach(e=>{"type"!=e&&d.setAttribute("data-src"==e?"src":e,t.getAttribute(e))});let a=!(d.type="text/javascript");!d.src&&t.textContent&&(d.src=litespeed_inline2src(t.textContent),a=!0),t.after(d),t.remove(),a&&e()}function litespeed_inline2src(t){try{var d=urlCreator.createObjectURL(new Blob([t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1")],{type:"text/javascript"}))}catch(e){d="data:text/javascript;base64,"+btoa(t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1"))}return d}</script></body>
</html>

Explanation:

$('#example').DataTable(); initializes the DataTable plugin on the table with the ID example.

Output: The table will be enhanced with features like sorting, searching, and pagination.

Map Visualization with jQuery

Maps can be integrated using libraries like Leaflet.

Installation:

Include Leaflet in your project:

				
					<link rel="stylesheet" href="https://unpkg.com/leaflet/dist/leaflet.css" /> <script type="litespeed/javascript" data-src="https://unpkg.com/leaflet/dist/leaflet.js"></script>

Basic Example:

				
					<!DOCTYPE html>
<html>
<head>
    <title>Leaflet Map Example</title>
    <link rel="stylesheet" href="https://unpkg.com/leaflet/dist/leaflet.css" /> <script type="litespeed/javascript" data-src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type="litespeed/javascript" data-src="https://unpkg.com/leaflet/dist/leaflet.js"></script> <style>#map { height: 400px; }</style></head>
<body>
    <div id="map"></div> <script type="litespeed/javascript">$(document).ready(function(){var map=L.map('map').setView([51.505,-0.09],13);L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',{attribution:'© OpenStreetMap contributors'}).addTo(map);L.marker([51.5,-0.09]).addTo(map).bindPopup('A pretty CSS3 popup.<br> Easily customizable.').openPopup()})</script> <script data-no-optimize="1">!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).LazyLoad=e()}(this,function(){"use strict";function e(){return(e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n,a=arguments[e];for(n in a)Object.prototype.hasOwnProperty.call(a,n)&&(t[n]=a[n])}return t}).apply(this,arguments)}function i(t){return e({},it,t)}function o(t,e){var n,a="LazyLoad::Initialized",i=new t(e);try{n=new CustomEvent(a,{detail:{instance:i}})}catch(t){(n=document.createEvent("CustomEvent")).initCustomEvent(a,!1,!1,{instance:i})}window.dispatchEvent(n)}function l(t,e){return t.getAttribute(gt+e)}function c(t){return l(t,bt)}function s(t,e){return function(t,e,n){e=gt+e;null!==n?t.setAttribute(e,n):t.removeAttribute(e)}(t,bt,e)}function r(t){return s(t,null),0}function u(t){return null===c(t)}function d(t){return c(t)===vt}function f(t,e,n,a){t&&(void 0===a?void 0===n?t(e):t(e,n):t(e,n,a))}function _(t,e){nt?t.classList.add(e):t.className+=(t.className?" 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Delayed"),litespeed_ui_events.forEach(e=>{window.removeEventListener(e,litespeed_load_delayed_js_force,{passive:!0})}),document.querySelectorAll("iframe[data-litespeed-src]").forEach(e=>{e.setAttribute("src",e.getAttribute("data-litespeed-src"))}),"loading"==document.readyState?window.addEventListener("DOMContentLoaded",litespeed_load_delayed_js):litespeed_load_delayed_js()}litespeed_ui_events.forEach(e=>{window.addEventListener(e,litespeed_load_delayed_js_force,{passive:!0})});async function litespeed_load_delayed_js(){let t=[];for(var d in document.querySelectorAll('script[type="litespeed/javascript"]').forEach(e=>{t.push(e)}),t)await new Promise(e=>litespeed_load_one(t[d],e));document.dispatchEvent(new Event("DOMContentLiteSpeedLoaded")),window.dispatchEvent(new Event("DOMContentLiteSpeedLoaded"))}function litespeed_load_one(t,e){console.log("[LiteSpeed] Load ",t);var d=document.createElement("script");d.addEventListener("load",e),d.addEventListener("error",e),t.getAttributeNames().forEach(e=>{"type"!=e&&d.setAttribute("data-src"==e?"src":e,t.getAttribute(e))});let a=!(d.type="text/javascript");!d.src&&t.textContent&&(d.src=litespeed_inline2src(t.textContent),a=!0),t.after(d),t.remove(),a&&e()}function litespeed_inline2src(t){try{var d=urlCreator.createObjectURL(new Blob([t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1")],{type:"text/javascript"}))}catch(e){d="data:text/javascript;base64,"+btoa(t.replace(/^(?:<!--)?(.*?)(?:-->)?$/gm,"$1"))}return d}</script></body>
</html>

Explanation:

L.map('map') initializes the map on the div with the ID map.
L.tileLayer adds the map tiles from OpenStreetMap.
L.marker adds a marker with a popup to the map.

Output: A map centered on the coordinates [51.505, -0.09] with a marker and popup will be displayed.

In this chapter, we explored how to use jQuery for data visualization by integrating various libraries and techniques. We started with the basics of jQuery, introduced charting libraries like Chart.js and Highcharts, and then moved on to advanced features such as dynamic data loading and interactive charts. We also looked at how to integrate other visualization techniques like DataTables and Leaflet maps. With these skills, you can effectively incorporate data visualization into your web projects, providing users with valuable insights and interactive experiences. Happy coding !❤️

Data Visualization with jQuery

Basics of jQuery

What is jQuery?

Basic jQuery Syntax

Explanation:

Introduction to Data Visualization Libraries

Chart.js

Installation:

Basic Example:

Explanation:

Highcharts

Installation:

Basic Example:

Explanation:

Advanced Data Visualization Techniques

Dynamic Data Loading

Example:

Explanation:

Combining jQuery with Other Visualization Techniques

DataTables Integration

Installation:

Explanation:

Basic Example:

Explanation:

Map Visualization with jQuery

Installation:

Basic Example:

Explanation:

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