obj.className = removed;//替换原来的 class. } function hasClass(obj, cls){ var obj_class = obj.className,//获取 class 内容. obj_class_lst = obj_class.split(/\s+/);//通过split空字符将cls转换成数组. x = 0; for(x in obj_class_lst) { if(obj_class_lst[x] == cls) {//循环...
trim:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim 由于现代浏览器都基本支持了classList,所以移动端可以直接使用classList会更方便一些,如: var div = document.getElementById('div'); div.classList.remove("foo"); div.classList.add("anotherclass"); d...
1functionhasClass(element, cls) {2varregexp =newRegExp("\\b" + cls + "\\b");3returnelement.className.search(regexp) !== -1;4}//end hasClass() 用\b匹配word boundary,这样可以有效处理"aaa", "aaa bbb"的匹配,但是忘记了word boundary的明确定义 Before the first character in the string...
trim:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim 由于现在浏览器都基本支持了classList,所以移动端可以直接使用classList会更方便一些,如: var div = document.getElementById('div'); div.classList.remove("foo"); div.classList.add("anotherclass"); div...
问普通JavaScript的"hasClass“函数是什么？EN您可以检查element.className是否与/\bthatClass\b/匹配。
obj_class_lst = obj_class.split(/\s+/);//通过split空字符将cls转换成数组. x = 0; for(x in obj_class_lst) { if(obj_class_lst[x] == cls) {//循环数组, 判断是否包含cls return true; } } return false; } 以上就是本文的全部内容,希望对大家学习javascript程序设计有所帮助。
removeClass;if('classList'indocument.documentElement) { hasClass=function(elem, c) {returnelem.classList.contains(c); }; addClass=function(elem, c) { elem.classList.add(c); }; removeClass=function(elem, c) { elem.classList.remove(c); ...
const isActive = button.classList.contains("active"); It's really as simple as that!Hey, if you've found this useful, please share the post to help other folks find it: Twitter Reddit Hacker News Y Facebook There's even more:Other JavaScript tutorials:A...
内容.obj_class_lst = obj_class.split(/\s+/);//通过split空字符将cls转换成数组.x = 0;for(x in obj_class_lst) { if(obj_class_lst[x] == cls) {//循环数组, 判断是否包含cls return true;} } return false;} 以上就是本⽂的全部内容，希望对⼤家学习javascript程序设计有所帮助。
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