jQuery jQuery.merge()

The $.merge() operation forms an array that contains all elements from the two arrays. The orders of items in the arrays are preserved, with items from the second array appended. The $.merge() function is destructive. It alters the length and numeric index properties of the first object to include items from the second.

If you need the original first array, make a copy of it before calling $.merge(). Fortunately, $.merge() itself can be used for this duplication:

var newArray = $.merge([], oldArray);

This shortcut creates a new, empty array and merges the contents of oldArray into it, effectively cloning the array.

Prior to jQuery 1.4, the arguments should be true Javascript Array objects; use $.makeArray if they are not.