JQuery addclass () Source code interpretation

AddClass:function(value) {varclasses, Elem, cur, clazz, J, I= 0, Len= This. length, proceed=typeofValue = = = "string" &&value; if(jquery.isfunction (value)) {return  This. each (function(j) {JQuery ( This). AddClass (Value.call ( ThisJ This. ClassName));        }); }        if(Proceed) {//if the value passed in is not a string            //The disjunction here's for better compressibility (see Removeclass)            //if a false value is passed in, "". Match ()            //Core_rnotwhite is used to match non-whitespace characters, and has a G ID, the match returns the array successfully, the match does not return successfully []Classes = (Value | | ""). Match (core_rnotwhite) | | []; //Rclass =/[\t\r\n\f]/g             for(; i < Len; i++) {Elem= This[i]; //if Elem is an element, CUR returns the true value, "" or "a B"                //Replace tab character return line wrapCur = Elem.nodetype = = = 1 && (elem.classname?                    ( "+ Elem.classname +" "). Replace (Rclass," " ) :                    " "                ); if(cur) {J= 0; //traversal, if not present in the original class, string concatenation                     while((Clazz = classes[j++]) ) {                        if(Cur.indexof ("" + Clazz + ") < 0) {cur+ = Clazz + ""; }} elem.classname= Jquery.trim (cur);//The last two sides go to space                }            }        }        return  This; }

Removeclass is similar to the AddClass code.

JQuery addclass () Source code interpretation