One solution to the eight queens puzzle in JavaScript

eight_queens_puzzle.js

var solves = [];
var ans = [];

function solve_eight_queens (ans, line) {
	if(line >== 8) {
		solves.push(ans);
		return true;
	} else {
		for (var row = 0; row < 8; ++row) {
			var fine = true;
			for (var i = 0; i < ans.length; ++i) {
				if(ans[i] === row 
				|| line - i === row - ans[i] 
				|| line - i === ans[i] - row) {
					fine = false;
					break;
				}
			}
			if(fine) {
				ans.push(row);
				solve_eight_queens(ans, line + 1);
				ans.pop();
			}
		}
	}
}

console.time('solve');
solve_eight_queens(ans, 0);
console.timeEnd('solve');