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TypeScript | Array splice() Method

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  • Last Updated : 18 Jun, 2020
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The Array.splice() is an inbuilt TypeScript function which is used to change the content of an array, adding new elements while removing old elements.
Syntax: 

array.splice(index, howMany, [element1][, ..., elementN]); 

Parameter: This method accept three parameter as mentioned above and described below: 

  • index : This parameter is the index at which to start changing the array.
  • howMany : This parameter is the integer indicating the number of old array elements to remove.
  • element1, …, elementN : This parameter is the elements to add to the array.

Return Value: This method returns the extracted array. 
Below example illustrate the  Array splice() method in TypeScriptJS:
Example 1: 

JavaScript




<script>
    // Driver code
    var arr = [ 11, 89, 23, 7, 98 ]; 
  
    // use of splice() method 
    var removed = arr.splice(2, 0, 11);
       
    // printing
    console.log(removed);
</script>


Output: 

[]

Example 2: 

JavaScript




<script>
    // Driver code
    var arr = ["G", "e", "e", "k", "s", "f", "o"
               "r", "g", "e", "e", "k", "s"]; 
    var val;
   
    // use of splice() method 
    val = arr.splice(0,5);
    console.log( val );
    console.log( arr );
</script>


Output: 

[ 'G', 'e', 'e', 'k', 's' ]
[ 'f', 'o', 'r', 'g', 'e', 'e', 'k', 's' ]

 


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