JavaScript Array Object Concat () method

The Concat () method is used to concatenate two or more arrays.

The method does not alter the existing array, but only returns a copy of the concatenated array.

Grammar:
Arrayobject.concat (Arrayx,arrayx,......, Arrayx)

Arrayx required. The parameter can be a specific value, or it can be an array object. can be any number.

return value:
Returns a new array. The array is generated by adding all the Arrayx parameters to the Arrayobject. If the argument for the concat () operation is an array, then the element in the array is added, not the array.

Example 1:
Connect the parameters in Concat () to the array A:

<script type= "Text/javascript" >var a = [];d ocument.write (A.concat (4,5));</script>

Output:

1,2,3,4,5

Example 2:
Create two arrays and connect them with concat ():

<pre class= "javascript" name= "code" ><script type= "Text/javascript" >var arr = new Array (3) arr[0] = "George" ARR[1] = "John" arr[2] = "Thomas" var arr2 = new Array (3) arr2[0] = "James" arr2[1] = "Adrew" arr2[2] = "Martin" document.write ( Arr.concat (ARR2)) </script>

Output:

George,john,thomas,james,adrew,martin

JavaScript Array Object Concat () method