function hasClass(obj, cls) {
return obj.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
}
function addClass(obj, cls) {
if (!hasClass(obj, cls)) obj.className += " " + cls;
}
function removeClass(obj, cls) {
if (hasClass(obj, cls)) {
var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
obj.className = obj.className.replace(reg, '');
}
}
function toggleClass(obj,cls){
if(hasClass(obj,cls)){
removeClass(obj, cls);
}else{
addClass(obj, cls);
}
}
function toggleClassTest(){
var obj = document. getElementById('test');
toggleClass(obj,"testClass");
}
原生js实现toggle classname的功能
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转载自blog.csdn.net/qq_40816360/article/details/84591043
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