8 lines
		
	
	
		
			186 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			186 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| "use strict";
 | |
| 
 | |
| module.exports = function () {
 | |
| 	var arr = [1, 2, 3, 4, 5, 6];
 | |
| 	if (typeof arr.fill !== "function") return false;
 | |
| 	return String(arr.fill(-1, -3)) === "1,2,3,-1,-1,-1";
 | |
| };
 |