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TypeScript | Array forEach() Method

  • Last Updated : 18 Jun, 2020

The Array.forEach() is an inbuilt TypeScript function which is used to calls a function for each element in the array. 
Syntax: 

array.forEach(callback[, thisObject])

Parameter: This method accepts two parameter as mentioned above and described below: 

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  • callback : This parameter is the Function to test for each element.
  • thisObject : This parameter is the Object to use as this when executing callback.

Return Value: This method returns created array. 
Below example illustrate the Array forEach() Method in TypeScript.

Example 1: 



JavaScript




<script>
    // Driver code
    var arr = [ 11, 89, 23, 7, 98 ]; 
       
    // printing eah element
    arr.forEach(function (value) {
        console.log(value);
    });
</script>

Output: 

11
89
23
7
98

Example 2: 

JavaScript




<script>
    // Driver code
    var arr = [ 1, 2, 3, 4, 5 ]; 
       
    // printing square of  element
    arr.forEach(function (value) {
        console.log(value * value);
    });
</script>

Output: 

1
4
9
16
25
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