Question

How to insert string at specific index of another string in JavaScript

Answer 1

let str = "JavaScript Python C";
const string = 'C++';

const index = 11;

str = str.slice(0, index) + string + str.slice(index);

console.log(str);
 
 
 
 
/*
run:
 
"JavaScript C++Python C"
 
*/

 

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