Answers for "array javascript extend"

javascript extend array

The .push method can take multiple arguments. You can use the spread operator to pass all the elements of the second array as arguments to .push:

>>> a.push(...b)
If your browser does not support ECMAScript 6, you can use .apply instead:

>>> a.push.apply(a, b)
Or perhaps, if you think it's clearer:

>>> Array.prototype.push.apply(a,b)

array javascript extend

var a = [1, 2, 3];
a = a.concat([5, 4, 3]);