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TypeScript | String search() Method

  • Last Updated : 17 Feb, 2021

The search() is an inbuilt function in TypeScript that is used to search for a match between a regular expression and this String object. 
Syntax:

string.search(regexp);

Parameter: This methods accept a single parameter as mentioned above and described below: 

  • regexp: This parameter is a RegExp object.

Return Value: This method returns the index of the regular expression inside the string. Otherwise, it returns -1. 
Below example illustrate the  String search() method in TypeScriptJS:

Example 1:

Javascript






// This is TypeScript
// Original strings
var str = "Geeksforgeeks - Best Platform";
 
var re = /Best/gi;
 
// use of String search() Method
if (str.search(re) == -1 ) {
  console.log("Not Found" );
} else {
  console.log("Found" );
}

Output: 

Found

Example 2:

JavaScript




// This is TypeScript
// Original strings
var str = "Geeksforgeeks - Best Platform";
 
var re = /geeek/gi;
 
// use of String search() Method
if (str.search(re) == -1 ) {
    console.log("Not Found" );
} else {
    console.log("Found" );
}

Output:

Not Found 
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