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JavaScript选择器API入门
选择符API的推出显著提升了JavaScript代码的查询效率。如今,主流浏览器如IE8及以上版本、Chrome等均支持该API。以下将介绍选择器的几个核心方法及其基本应用。 1、 querySelector() 是选择器API的核心方法之一,可传入一个CSS选择符进行查找,若页面中存在匹配元素 ...
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