jQuery.merge()
jQuery.merge( first, second ) Returns: Array
Description: Merge the contents of two arrays together into the first array.
-
version added: 1.0jQuery.merge( first, second )
firstThe first array to merge, the elements of second added.
secondThe second array to merge into the first, unaltered.
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 first parameter to add the 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.
Examples:
Example: Merges two arrays, altering the first argument.
$.merge( [0,1,2], [2,3,4] )
Result:
[0,1,2,2,3,4]
Example: Merges two arrays, altering the first argument.
$.merge( [3,2,1], [4,3,2] )
Result:
[3,2,1,4,3,2]
Example: Merges two arrays, but uses a copy, so the original isn't altered.
var first = ['a','b','c'];
var second = ['d','e','f'];
$.merge( $.merge([],first), second);
Result:
["a","b","c","d","e","f"]