classList.min.js

if("document"in self){if(!("classList"in document.createElement("_"))||document.createElementNS&&!("classList"in document.createElementNS("http://www.w3.org/2000/svg","g"))){(function(view){"use strict";if(!("Element"in view))return;var classListProp="classList",protoProp="prototype",elemCtrProto=view.Element[protoProp],objCtr=Object,strTrim=String[protoProp].trim||function(){return this.replace(/^\s+|\s+$/g,"")},arrIndexOf=Array[protoProp].indexOf||function(item){var i=0,len=this.length;for(;i<len;i++){if(i in this&&this[i]===item){return i}}return-1},DOMEx=function(type,message){this.name=type;this.code=DOMException[type];this.message=message},checkTokenAndGetIndex=function(classList,token){if(token===""){throw new DOMEx("SYNTAX_ERR","An invalid or illegal string was specified")}if(/\s/.test(token)){throw new DOMEx("INVALID_CHARACTER_ERR","String contains an invalid character")}return arrIndexOf.call(classList,token)},ClassList=function(elem){var trimmedClasses=strTrim.call(elem.getAttribute("class")||""),classes=trimmedClasses?trimmedClasses.split(/\s+/):[],i=0,len=classes.length;for(;i<len;i++){this.push(classes[i])}this._updateClassName=function(){elem.setAttribute("class",this.toString())}},classListProto=ClassList[protoProp]=[],classListGetter=function(){return new ClassList(this)};DOMEx[protoProp]=Error[protoProp];classListProto.item=function(i){return this[i]||null};classListProto.contains=function(token){token+="";return checkTokenAndGetIndex(this,token)!==-1};classListProto.add=function(){var tokens=arguments,i=0,l=tokens.length,token,updated=false;do{token=tokens[i]+"";if(checkTokenAndGetIndex(this,token)===-1){this.push(token);updated=true}}while(++i<l);if(updated){this._updateClassName()}};classListProto.remove=function(){var tokens=arguments,i=0,l=tokens.length,token,updated=false,index;do{token=tokens[i]+"";index=checkTokenAndGetIndex(this,token);while(index!==-1){this.splice(index,1);updated=true;index=checkTokenAndGetIndex(this,token)}}while(++i<l);if(updated){this._updateClassName()}};classListProto.toggle=function(token,force){token+="";var result=this.contains(token),method=result?force!==true&&"remove":force!==false&&"add";if(method){this[method](token)}if(force===true||force===false){return force}else{return!result}};classListProto.toString=function(){return this.join(" ")};if(objCtr.defineProperty){var classListPropDesc={get:classListGetter,enumerable:true,configurable:true};try{objCtr.defineProperty(elemCtrProto,classListProp,classListPropDesc)}catch(ex){if(ex.number===-2146823252){classListPropDesc.enumerable=false;objCtr.defineProperty(elemCtrProto,classListProp,classListPropDesc)}}}else if(objCtr[protoProp].__defineGetter__){elemCtrProto.__defineGetter__(classListProp,classListGetter)}})(self)}(function(){"use strict";var testElement=document.createElement("_");testElement.classList.add("c1","c2");if(!testElement.classList.contains("c2")){var createMethod=function(method){var original=DOMTokenList.prototype[method];DOMTokenList.prototype[method]=function(token){var i,len=arguments.length;for(i=0;i<len;i++){token=arguments[i];original.call(this,token)}}};createMethod("add");createMethod("remove")}testElement.classList.toggle("c3",false);if(testElement.classList.contains("c3")){var _toggle=DOMTokenList.prototype.toggle;DOMTokenList.prototype.toggle=function(token,force){if(1 in arguments&&!this.contains(token)===!force){return force}else{return _toggle.call(this,token)}}}testElement=null})()}