TypeScript Array concat() Method

The Array.concat() is an inbuilt TypeScript function which is used to merge two or more arrays together. 
Syntax:

array.concat(value1, value2, ..., valueN)

Parameter: This method accepts a single parameter multiple time as mentioned above and described below: 

• valueN : These parameters are arrays and/or values to concatenate.

Return Value: This method returns the new array. 
Below examples illustrate the Array concat() method in TypeScript
Example 1:

JavaScript

<script>
    // Driver code
    var num1 = [11, 12, 13];
    var num2 = [14, 15, 16];
    var num3 = [17, 18, 19];

    // use of String concat() Method
    console.log(num1.concat(num2, num3));
</script>

Output:

[ 11, 12, 13, 14, 15, 16, 17, 18, 19 ]

Example 2:

JavaScript

<script>
    // Driver code
    var num1 = ['a', 'b', 'c'];

    // use of String concat() Method
    console.log(num1.concat(1, [2, 3]));
</script>

Output:

[ 'a', 'b', 'c', '1,2,3' ]

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