{"id":994853,"date":"2025-03-21T14:23:05","date_gmt":"2025-03-21T13:23:05","guid":{"rendered":"https:\/\/clickin.dk\/marketing-dictionary\/jquery\/"},"modified":"2025-09-16T12:38:16","modified_gmt":"2025-09-16T10:38:16","slug":"jquery","status":"publish","type":"page","link":"https:\/\/clickin.dk\/en\/marketing-dictionary\/jquery\/","title":{"rendered":"jQuery"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"994853\" class=\"elementor elementor-994853\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d540bcb e-flex e-con-boxed e-con e-parent\" data-id=\"d540bcb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2ba746 elementor-widget elementor-widget-image\" data-id=\"d2ba746\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery.png\" class=\"attachment-large size-large wp-image-995730\" alt=\"jQuery illustration.\" srcset=\"https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery.png 512w, https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery-300x300.png 300w, https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery-150x150.png 150w, https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery-24x24.png 24w, https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery-48x48.png 48w, https:\/\/clickin.dk\/wp-content\/uploads\/2025\/09\/jQuery-96x96.png 96w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-165e25a elementor-widget elementor-widget-text-editor\" data-id=\"165e25a\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"blogposttext\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><b>A JavaScript library for faster web development<\/b><\/h2><p>jQuery is a <span style=\"font-weight: 400;\">popular, fast, and lightweight <\/span> Javascript library <span style=\"font-weight: 400;\">that makes it easier to manipulate HTML, handle events, create animations, and perform AJAX requests. <\/span> <\/p><p><span style=\"font-weight: 400;\">jQuery was developed<\/span> by John Resigi <span style=\"font-weight: 400;\"> in 2006 and is still widely used in <a href=\"https:\/\/clickin.dk\/en\/web-development\/\">web development<\/a>, although modern frameworks such as <\/span> React, Vue and Angular <span style=\"font-weight: 400;\">have taken over some of its functionality.<\/span><\/p><h2><b>What is jQuery?<\/b><\/h2><p><span style=\"font-weight: 400;\">jQuery is an open-source library that makes writing JavaScript code easier by:<\/span><\/p><p><span style=\"font-weight: 400;\">\u2705 <\/span><b>Simplify DOM manipulation<\/b> <span style=\"font-weight: 400;\">(change HTML content dynamically)<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2705 <\/span><b>Handle events<\/b> <span style=\"font-weight: 400;\">(click, scroll, keystroke, etc.)<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2705 <\/span><b>Create animations and effects<\/b><b><br><\/b> <span style=\"font-weight: 400;\"> \u2705 <\/span><b>Improve AJAX queries<\/b> <span style=\"font-weight: 400;\">(retrieve data without reloading the page)<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2705 <\/span><b>Make JavaScript cross-browser compatible<\/b><\/p><h3><b>How to add jQuery to your project<\/b><\/h3><p><span style=\"font-weight: 400;\">You can include jQuery on your website via a <\/span> CDN <span style=\"font-weight: 400;\">(Content Delivery Network) or download it locally.<\/span><\/p><p><span style=\"font-weight: 400;\">\ud83d\udd39 <\/span><b>Include jQuery via a CDN <\/b> <span style=\"font-weight: 400;\">(recommended):<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;script src=&#8221;https:\/\/code.jquery.com\/jquery-3.6.0.min.js&#8221;&gt;&lt;\/script&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">\ud83d\udd39 <\/span><b>Include jQuery locally<\/b> <span style=\"font-weight: 400;\">(if you downloaded the file):<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;script src=&#8221;js\/jquery.min.js&#8221;&gt;&lt;\/script&gt;<\/span><\/p><p> <\/p><h3><b>Basic syntax in jQuery<\/b><\/h3><p><span style=\"font-weight: 400;\">jQuery syntax is simple and always begins with<\/span> <span style=\"font-weight: 400;\"> $(selector).action()<\/span><span style=\"font-weight: 400;\">, where:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">$<\/span><span style=\"font-weight: 400;\"> refers to jQuery.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">selector<\/span><span style=\"font-weight: 400;\"> selects HTML elements.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">action()<\/span><span style=\"font-weight: 400;\"> performs an action on the selected items.<\/span><\/li><\/ul><p><b>Example \u2013 Hide an element by clicking a button:<\/b><\/p><p><span style=\"font-weight: 400;\">&lt;button id=&#8221;hideBtn&#8221;&gt;Skjul tekst&lt;\/button&gt;<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;p id=&#8221;text&#8221;&gt;This is a text that can be hidden.&lt;\/p&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">&lt;script&gt;<\/span><\/p><p><span style=\"font-weight: 400;\"> $(document).ready(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#hideBtn&#8221;).click(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#text&#8221;).hide();<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/p><p> <\/p><h2><b>jQuery main features<\/b><\/h2><h3><b>1. DOM-manipulation<\/b><\/h3><p><span style=\"font-weight: 400;\">With jQuery, you can easily change HTML content and CSS styling dynamically.<\/span><\/p><p><b>Example \u2013 Change the text and color of an element:<\/b><\/p><p><span style=\"font-weight: 400;\">&lt;p id=&#8221;demo&#8221;&gt;Change me!&lt;\/p&gt;<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;button id=&#8221;changeText&#8221;&gt;Click here&lt;\/button&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">&lt;script&gt;<\/span><\/p><p><span style=\"font-weight: 400;\"> $(document).ready(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#changeText&#8221;).click(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#demo&#8221;).text(&#8220;Text is changed!&#8221;).css(&#8220;color&#8221;, &#8220;red&#8221;);<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/p><p> <\/p><h3><b>2. Event Management (Events)<\/b><\/h3><p><span style=\"font-weight: 400;\">jQuery makes it easy to listen for user interactions like clicks, keystrokes, and mouse movements.<\/span><\/p><p><b>Example \u2013 Change background color on hover:<\/b><\/p><p><span style=\"font-weight: 400;\">&lt;p id=&#8221;hoverMe&#8221;&gt;Hover over me!&lt;\/p&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">&lt;script&gt;<\/span><\/p><p><span style=\"font-weight: 400;\"> $(document).ready(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#hoverMe&#8221;).hover(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(this).css(&#8220;background-color&#8221;, &#8220;yellow&#8221;);<\/span><\/p><p><span style=\"font-weight: 400;\"> }, function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(this).css(&#8220;background-color&#8221;, &#8220;&#8221;);<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/p><p> <\/p><h3><b>3. Animations and effects<\/b><\/h3><p><span style=\"font-weight: 400;\">jQuery has built-in animations that can be used to hide, show, or animate elements.<\/span><\/p><p><b>Example \u2013 Use<\/b>.<b>fadeOut() <\/b> <b>to fade out slowly:<\/b><\/p><p><span style=\"font-weight: 400;\">&lt;button id=&#8221;fadeBtn&#8221;&gt;Go away!&lt;\/button&gt;<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;p id=&#8221;fadeText&#8221;&gt;I will slowly disappear&#8230;&lt;\/p&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">&lt;script&gt;<\/span><\/p><p><span style=\"font-weight: 400;\"> $(document).ready(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#fadeBtn&#8221;).click(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#fadeText&#8221;).fadeOut(1000);<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/p><p> <\/p><h3><b>4. AJAX \u2013 Retrieve data without reloading the page<\/b><\/h3><p><span style=\"font-weight: 400;\">jQuery makes it easy to work with AJAX and retrieve data from a server.<\/span><\/p><p><b>Example \u2013 Get data from an external file and display it in a<\/b> <b>div<\/b><b>:<\/b><\/p><p><span style=\"font-weight: 400;\">&lt;button id=&#8221;loadData&#8221;&gt;Fetch Data&lt;\/button&gt;<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;div id=&#8221;content&#8221;&gt;&lt;\/div&gt;<\/span><\/p><p> <\/p><p><span style=\"font-weight: 400;\">&lt;script&gt;<\/span><\/p><p><span style=\"font-weight: 400;\"> $(document).ready(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#loadData&#8221;).click(function(){<\/span><\/p><p><span style=\"font-weight: 400;\"> $(&#8220;#content&#8221;).load(&#8220;data.txt&#8221;);<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\"> });<\/span><\/p><p><span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/p><p> <\/p><h2><b>Advantages and disadvantages of jQuery<\/b><\/h2><p><span style=\"font-weight: 400;\">Like other technologies, frameworks, and solutions, jQuery also has its advantages and limitations. <\/span><\/p><h3><b>Advantages:<\/b><\/h3><p><span style=\"font-weight: 400;\">\u2714 <\/span><b>Simple syntax <\/b> <span style=\"font-weight: 400;\">\u2013 Smaller and cleaner code than regular JavaScript.<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2714 <\/span><b>Cross-browser compatibility<\/b> <span style=\"font-weight: 400;\">\u2013 Works the same on all browsers.<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2714 <\/span><b>Rapid development <\/b> <span style=\"font-weight: 400;\">\u2013 Reduces development time for interactive elements.<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u2714 <\/span><b>Many plugins <\/b> <span style=\"font-weight: 400;\">\u2013 Extend functionality with jQuery plugins.<\/span><\/p><h3><b>Cons:<\/b><\/h3><p><span style=\"font-weight: 400;\">\u274c <\/span><b>Heavy for modern applications <\/b> <span style=\"font-weight: 400;\">\u2013 jQuery may be unnecessary in modern<\/span> SPA frameworks <span style=\"font-weight: 400;\">like <\/span> React <span style=\"font-weight: 400;\">or <\/span> Vue.js<span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u274c <\/span><b>Performance challenges<\/b> <span style=\"font-weight: 400;\"> \u2013 jQuery can be slower than pure JavaScript in complex applications.<\/span><span style=\"font-weight: 400;\"><br><\/span> <span style=\"font-weight: 400;\"> \u274c <\/span><b>Deprecated in some cases<\/b> <span style=\"font-weight: 400;\">\u2013 Many modern browsers already support the features jQuery offers via <\/span> vanilla JavaScript<span style=\"font-weight: 400;\">.<\/span><\/p><h2><b>Will you be using jQuery in 2025?<\/b><\/h2><p>jQuery is still relevant<span style=\"font-weight: 400;\">, but its use is declining, especially in larger web applications. Today, many developers prefer  <\/span>modern JavaScript frameworks such as:<span style=\"font-weight: 400;\"><\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>React.js<\/b><span style=\"font-weight: 400;\">\u2013 Used for interactive user interfaces.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Vue.js<\/b><span style=\"font-weight: 400;\">\u2013 Lightweight alternative to React with similar functionality.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Plain JavaScript (Vanilla JS)<\/b> <span style=\"font-weight: 400;\">\u2013 Many jQuery functions can now be easily done with pure JavaScript.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><b>When should you use jQuery?<\/b><\/p><p> <span style=\"font-weight: 400;\">\u2705 If you are working on an<\/span> older website <span style=\"font-weight: 400;\">with existing jQuery code<\/span><span style=\"font-weight: 400;\">.<\/span><br> <span style=\"font-weight: 400;\">\u2705 If you want to quickly add<\/span> simple interactions <span style=\"font-weight: 400;\">without using a framework<\/span><span style=\"font-weight: 400;\">.<\/span> <span style=\"font-weight: 400;\">\u2705If you are making a<\/span> simple <a href=\"https:\/\/clickin.dk\/en\/landing-page\/\">landing page<\/a> or WordPress page<span style=\"font-weight: 400;\">, where jQuery is already included.<\/span><\/p><p> <\/p><h2><b>The future of jQuery<\/b><\/h2><p>jQuery is still a useful tool, but modern JavaScript frameworks have largely taken over its functionality. <span style=\"font-weight: 400;\">If you&#8217;re working on a <\/span> new project, <span style=\"font-weight: 400;\">you should consider using <\/span> JavaScript <span style=\"font-weight: 400;\">or a <\/span> modern framework <span style=\"font-weight: 400;\">like<\/span> React or Vue<span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Do you need help with web development, JavaScript optimization or modern frontend frameworks? <\/span> <a href=\"https:\/\/clickin.dk\/en\/\"><b>Contact Click<\/b><\/a> <b>infor professional advice<\/b><span style=\"font-weight: 400;\">\ud83d\ude80<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a8b518e e-flex e-con-boxed e-con e-parent\" data-id=\"a8b518e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fba089c elementor-widget elementor-widget-template\" data-id=\"fba089c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"template.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-template\">\n\t\t\t\t\t<div data-elementor-type=\"container\" data-elementor-id=\"995320\" class=\"elementor elementor-995320 elementor-991091 elementor-991091\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7e26d798 e-flex e-con-boxed e-con e-parent\" data-id=\"7e26d798\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6fa0fdf7 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6fa0fdf7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2dc98b86 elementor-author-box--layout-image-left elementor-author-box--avatar-yes elementor-author-box--name-yes elementor-author-box--biography-yes elementor-widget elementor-widget-author-box\" data-id=\"2dc98b86\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"author-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-author-box\">\n\t\t\t\t\t\t\t<div  class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/clickin.dk\/wp-content\/uploads\/2023\/10\/martin_grey_portrait_1-1.jpg-1-300x300.png\" alt=\"Picture of Martin S\u00f8lberg\" loading=\"lazy\">\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t<div class=\"elementor-author-box__text\">\n\t\t\t\t\t\t\t\t\t<div >\n\t\t\t\t\t\t<h4 class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\tMartin S\u00f8lberg\t\t\t\t\t\t<\/h4>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-author-box__bio\">\n\t\t\t\t\t\tAdm. direkt\u00f8r &amp; Digital konsulent\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A JavaScript library for faster web development jQuery is a popular, fast, and lightweight Javascript library that makes it easier to manipulate HTML, handle events, create animations, and perform AJAX requests. jQuery was developed by John Resigi in 2006 and is still widely used in web development, although modern frameworks such as React, Vue and&#8230;<\/p>\n","protected":false},"author":1,"featured_media":995730,"parent":994503,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-994853","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is jQuery? 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