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TypeScript Array concat() Method

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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' ]

Last Updated : 03 Jan, 2023
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