How can I add two dates in JavaScript without libraries?

Just use Date objects. Get milliseconds via getTime(), sum them, then create a new Date. This keeps your code simple and works in plain JavaScript.

What is the easiest way of adding two dates in JavaScript?

Use getTime() on both dates, sum them, and create a new Date. This method is simple and works without extra libraries or complex code.

Can I add two dates in JavaScript to calculate a future date?

You can, but usually you add days or milliseconds to one date. Use getTime() to add values safely and create a new Date to see the future date.

Where can I add two dates in JavaScript for a project?

Anywhere in your JS code, just create Date objects, sum their milliseconds using getTime(), and make a new Date. It works in browsers or Node.js.

What happens if I add two invalid dates in JavaScript?

A: If one or both dates are invalid, getTime() returns NaN. Adding them gives NaN, and the new Date will also be invalid. Always check dates with isNaN(date.getTime()) before adding.

JavaScript Program to Add Two Dates (3 Methods)

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