function partial(fn) {
		var args = [];
		for (var i = 1; i < arguments.length; i++) {
 		args.push(arguments[i]);
 		}
 		i = 1;
	return function() {
		for (var j = 0; j < arguments.length; j++) {
 		args.push(arguments[j]);
 		}
 		j = 0;
		return fn.apply(null, args);;
	}
}
 
 
 
 
function add(a, b) { return a + b; }
function mult(a, b, c, d) { return a * b * c * d; }
 
var add5 = partial(add, 5); // Мы получили функцию с 1 аргументом, которая прибавляет к любому числу 5
 
console.log(add5(2)); // 7
console.log(add5(10)); // 15
console.log(add5(8)); // 13
 
var mult23 = partial(mult, 2, 3); // мы зафиксировали первые 2 аргумента mult() как 2 и 3
 
console.log(mult23(4, 5)); // 2*3*4*5 = 120
console.log(mult23(1, 1)); // 2*3*1*1 = 6

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