Which equals operator vs should be used in JavaScript comparisons

Question

I'm going through JavaScript using JSLint, and it's giving a lot of suggestions to replace == (two equals signs) with === (three equals signs) when performing things like comparing idSele_UNVEHtype.value.length == 0 within an if statement.

Is there an advantage to replacing == with === in terms of performance?

Given the abundance of comparison operators, any increase in performance would be welcomed.

Is there a speed advantage over == if no type conversion occurs?

Answer 1

I hope this is what you're looking for:

const today = new Date();
const yyyy = today.getFullYear();
let mm = today.getMonth() + 1; // Months start at 0!
let dd = today.getDate();

if (dd < 10) dd = '0' + dd;
if (mm < 10) mm = '0' + mm;

const formattedToday = dd + '/' + mm + '/' + yyyy;

document.getElementById('DATE').value = formattedToday;