Question

How to get the index of first occurrence of substring in a string with TypeScript

Answer 1

const str = new String("TypeScript programming language programming"); 

var index = str.indexOf("Script"); 
console.log("index = " + index);   

var index = str.indexOf("Programming"); 
console.log("index = " + index);  

var index = str.indexOf("programming"); 
console.log("index = " + index);  

 
  
 
  
  
/*
run:
   
"index = 4" 
"index = -1" 
"index = 11" 
   
*/

 

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