jQuery Optimization : Balance between JavaScript and jQuery
jQuery is excellent to speed up ANY front-end developer job. However, there are times when jQuery may take more time to perform certain action than using JavaScript. For example,
css: function( key, value ) {
// ignore negative width and height values
if ( (key == ‘width’ || key == ‘height’) && parseFloat(value) < 0 )
value = undefined;
return [...]
