How to flatten array in jQuery?

Question

How to simply flatten array in jQuery? I have:

[1, 2, [3, 4], [5, 6], 7]

And I want:

[1, 2, 3, 4, 5, 6, 7]

Answer 1

You can use Array.prototype.reduce which is technically not jQuery, but valid ES5:

var multidimensionArray = [1, 2, [3, 4], [5, 6], 7];
var initialValue = [];

var flattened = multidimensionArray.reduce(function(accumulator, current) {
    return accumulator.concat(current);
}, initialValue);

console.log(flattened);