This code snippet finds 1 to 2 digit numbers in a string matching a pattern (hard-coded for now), and replaces each number with itself + 1

replaceNumbersWithIncrement.js

/////////////////////////////////////////////////////////////////////////
// Replacing parts of a string with incremental numbers
////////////////////////////////////////////////////////////////////////

// This code snippet finds 1 to 2 digit numbers in a string matching a pattern
// (hard-coded for now), and replaces each number with itself + 1
// **** For a very specific use case, but easy enough to repurpose as needed :)

// Regex matches 1 to 2 digits preceded by the string ":
function replaceNumbersWithIncrement(givenString) {
    let re = /": \d{1,2}/gi;
    objString.replace(re, replacer);

    // For each match, get the number itself, increment it, and replace!
    function replacer(match) {
        let incrementedMatch = parseInt(match.substring(2), 10) + 1;
        console.log( incrementedMatch );
        return '": ' + incrementedMatch;
    }    
}