Question

How to use indexOf to get the index of the first substring in a string in JavaScript

Answer 1

const str = 'javascritp php java php';

let pos = str.indexOf('php');
  
console.log(pos); 
 
   
    
/*
run:
     
11
        
*/

 

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Answer 2

const str = 'javascritp php java';

let pos = str.indexOf('java');
  
console.log(pos); 
 
   
    
/*
run:
     
0
        
*/

 

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