JS——十进制转二进制

var arr = [];
		var num = 44;
		if(num == 1){
			arr[0] = 1;
		}else{
			while(num != 0){
				var tmp =num % 2;
				arr.push(tmp);
				num = (num - tmp) / 2;
			}
		}
		console.log(arr.reverse().join(""));