i needed a code to find difference between two dates using js

Answer 1

https://stackoverflow.com/questions/3224834/get-difference-between-2-dates-in-javascript

Answer 2

Create a function and set the two dates into variables, inside the function. Then subtract the two and save it to “result”.
function dateDiff() {
var d1 = date one;
var d2 = date two;
result = d1 - d2;
return result;
}

Or you can console.log result in the function like so:

console.log(result);
So when you call the function, it will automatically return the results to the console.