比较jQuery选择器的性能 [英] compare jquery selectors performance

问题描述

希望提高我的jquery选择器的性能.因此，任何技巧或文章都是最佳的共振峰jquery选择器?例如，选择div的ID.我可以在任何地方在线提供html并比较可以用来选择所需元素的不同选择器.

Looking at improving the performance of my jquery selectors. so any tips or articles as the best per formant jquery selectors? For example selecting the a div's id. Anywhere online I can provide html and compare the different selectors I can use to select the required element.

推荐答案

您可以在此处比较选择器的性能: http://jsperf. com/

You can compare selector performance here: http://jsperf.com/

只需设置HTML，包括jQuery，然后将要比较的每个选择器作为测试用例即可.

Just setup your HTML, include jQuery and place each selector you want to compare as a test case.

许多规则此处仍然适用，但是游戏在jQuery 1.4.3+中有所变化，此后Sizzle(jQuery的选择器引擎)将使用 querySelectorAll() 在支持它的浏览器中.

Many of the rules here still apply, however the game changed a bit in jQuery 1.4.3+, after that Sizzle (jQuery's selector engine) will use querySelectorAll() in browsers that support it.

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