1functionhasClass(element, cls) {2varclassName = " " + cls + " ",3rclass = /[\t\n\r\f]/g;4if(element.nodeType === 15&& (" " + element.className + " ").replace(rclass, " ").indexOf(className) >= 0) {6returntrue;7}//end if8returnfalse;9}//end hasClass()
className+=' '+csName; } addClass(odiv,'div3'); //这样就可以灵活给元素添加样式了; 【元素删除指定样式】 //同样先进行判断,在进行删除 var odiv=document.getElementById('div1'); function hasClass(element,csName){ return element.className.match(RegExp('(\\s|^)'+csName+'(\\s|$)'))...
选择元素的标准JavaScript方法是使用document.getElementById(“Id”),下面为大家总结一些常见的操作方法。 改变元素的所有class 要使用一个或多个class替换掉显有的class,可以这样写: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 document.getElementById("MyElement").className="MyClass";//单个classdocument...
您可以检查是否element.className匹配/\bthatClass\b/。
* removeClass *@param(element, 'c1 c2 c3') */functionremoveClass(ele, c){ctrlClass({ ele: ele, c: c, fun:function(opts){varele = opts.ele, c = opts.c; c.forEach(function(v){// TODO 是否有必要判断 hasClass// if (!hasClass(ele, v)) {ele.classList.remove(v);// }});...
* hasClass * @param (element, 'c1 c2 c3 c4 c5') */ function hasClass(ele, c) { return ctrlClass({ ele: ele, c: c, fun: function(opts) { return opts.c.every(function(v) { return !!opts.ele.classList.contains(v); }); ...
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.classList.toggle("visible"); div.classList.contains("foo"); // div...
if ( $('#MyElement').hasClass('MyClass') ) $('#MyElement').toggleClass('MyClass'); 使用HTML5 操作 classes 现代浏览器都支持使用classList方法来操作元素的className,但是IE10中不支持该方法,即使使用了shim document.getElementById("MyElement").classList.add('class'); ...
document.querySelector(element).scrollIntoView({ behavior: 'smooth' }); smoothScroll('#fooBar'); smoothScroll('.fooBar'); 19.detectDeviceType:检测移动/PC设备 const detectDeviceType = () => /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ...
All dropdown events have a relatedTarget property, whose value is the toggling anchor element. Event TypeDescription show.bs.dropdown This event fires immediately when the show instance method is called. shown.bs.dropdown This event is fired when the dropdown has been made visible to the user...