How to insert an alphabet/digit at specific location of string?

Question

I am supposed to write a JavaScript function which inserts the character/s between only two consecutive Hash ( # ) symbols. For an example: If input string is:

var str = "#TIME##MONEY#";

Then output string must be "#TIME#IS#MONEY#"

Answer 1

You can use the replace() method.

 var str = "#TIME##MONEY#"; var insert = 'IS' var newstr = str.replace('##', '#'+insert+'#') console.log(newstr);

Answer 2

Splice the string where you find ## and concat the string

 var str = "#TIME##MONEY#"; for (i = 0; i < str.length; i++) { if (str[i] == '#' && str[i + 1] == '#') { newStr = str.slice(0, i+1) + 'abc' +str.slice(i + 1, str.length); } } console.log(str) console.log(newStr)

Answer 3

Just use replace

 // Once var str = "#TIME##MONEY#"; document.write(str.replace('##','#IS#')); //more than once var str2 ="#TIME##MONEY##TIME##MONEY#"; while(str2.indexOf('##') != -1) { str2 = str2.replace('##','#IS#'); } document.write('<br />'+str2);