Question

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

Answer 1

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

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

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

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

 
  
 
  
  
/*
run:
   
"index = 4" 
"index = -1" 
"index = 32" 
   
*/

 

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