TypeScript | String lastIndexOf() Method

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The lastIndexOf() is an inbuilt function in TypeScript which is used to get the index within the calling String object of the last occurrence of the specified value.
Syntax:

string.lastIndexOf(searchValue[, fromIndex])

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

searchValue: This parameter is a string representing the value to search for.
fromIndex: This parameter is a location within the calling string to start the search from.

Return Value: This method returns the index of the last found occurrence, otherwise -1 if not found.

Example 1:

JavaScript

<script> 
    // Original strings 
    var str1 = new String('TypeScript | \ 
    String lastIndexOf() Method with example');  
  
    // use of String lastIndexOf() Method 
    console.log(str1.lastIndexOf("String")); 
</script>

Output:

Example 2:

JavaScript

<script> 
    // Original strings 
    var str1 = new String('TypeScript | \ 
    String lastIndexOf() Method with example');  
  
    // use of String lastIndexOf() Method 
    console.log(str1.lastIndexOf("Geeks")); 
</script>