JavaScript Regex से कॉमा कैसे रिप्लेस करें?

उदाहरण

रेगुलर एक्सप्रेशन और replace() से लास्ट कॉमा को रिप्लेस करें।

const makingRegularExpression = /,(?=[^,]*$)/; 
function replaceComma(values) { 
    console.log(values, " ==== replaced by JavaScript ==== ", values.replace(makingRegularExpression, " JavaScript")); 
} 
replaceComma("My Favorite subject is,"); 
replaceComma("My Favorite subject is, and teacher name is Adam Smith"); 
replaceComma("My Favorite subject is, and got the marks 89");

प्रोग्राम चलाने के लिए:

node fileName.js

आउटपुट

PS C:\Users\Amit\javascript-code> node demo164.js 
My Favorite subject is, ==== replaced by JavaScript ==== My Favorite subject is JavaScript 
My Favorite subject is, and teacher name is Adam Smith ==== replaced by JavaScript ==== My Favorite subject is JavaScript and teacher name is Adam Smith 
My Favorite subject is, and got the marks 89 ==== replaced by JavaScript ==== My Favorite subject is JavaScript and got the marks 89