Back
Syntax
Study
Editor
Mode:
HTML
CSS
JavaScript
PHP
Reset
Run »
HTML / CSS / JS
// jQuery performance checklist: // [x] Cache: const $el = $("#el") — not repeated $() // [x] Batch DOM: build string then .html(str), not .append() in loop // [x] Delegate: $(parent).on("click", ".child", fn) // [x] Debounce: clearTimeout/setTimeout on input events // [x] CSS animations: addClass/removeClass, not .animate() // [x] Slim jQuery: if no AJAX/animate needed // [x] detach() for heavy DOM manipulation // [x] Virtual scroll for 500+ row lists
Result
Open