jQuery Explained: The Library That Made JavaScript Bearable
Introduction In the late 2000s, writing JavaScript meant fighting browsers: the same code behaved differently in Internet Explorer, Firefox, and Safari, and even simple tasks like selecting elements or fetching data took verbose, fragile code. jQuery, released by John Resig in 2006, fixed that with one idea: a small library that smoothed over browser differences and made common tasks short. Its $ function became the most recognised symbol in web development, and at its peak jQuery ran on nearly every major website. The $ that did everything jQuery's core is selection plus chaining: pick elements with CSS-style selectors, then do things to all of them in one readable line: // Hide all paragraphs with class "old", then fade in the new content $(".old").hide(); $("#new-content").fadeIn(); // Fetch data without reloading the page $.ajax({ url: "/api/posts", method: "GET", success: function (data) { console.log(data); } }); B...