curry柯里化
Function.prototype.method = function(name,func){ if(!this.prototype[name]){ this.prototype[name] = func; } return this; } Function.method('curry', function(){ var slice = Array.prototype.slice, args = slice.apply(arguments), that = this; return function(){ return that.apply(null,args.concat(slice.apply(arguments))); } }) var add = function(a, b){ if(typeof a !== 'number' || typeof b !== 'number'){ throw{ name:'TypeError', message:'add needs numbers' } } return a+b; } var add1 = add.curry(1); document.write(add1(6));