JS: Array.prototype.toString

xArray.toString()

Return a string representation of xArray.

console.assert([3, 4].toString() === "3,4");
// note: no bracket in result

console.assert([[1, [2]], 5].toString() === "1,2,5");
// note: no bracket in result, even for nested array

console.assert([3, { k: 4 }].toString() === "3,[object Object]");