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Lesson 06 / 877%
Introduction6/6

jQuery Versions & Migration

v1 vs v2 vs v3 — IE, slim build, breaking changes.

// $(selector).action(args) — select then act$('#list .item.active')DOM<body><nav><ul id='list'><li class='item'><li class='item active'><li class='item'><main><article>// jQuery object (wrapped set)length: ?[0]: <li.item.active>.addClass, .on, .css, ...Click a step to walk through the selector engine.
Visual explanation diagram · click steps to walk through it

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