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JavaScript: Add minutes to a Date object

JavaScript Datetime: Exercise-6 with Solution

Write a JavaScript function to add specified minutes to a Date object.

Test Data:
console.log(add_minutes(new Date(2014,10,2), 30).toString());
Output :
"Sun Nov 02 2014 00:30:00 GMT+0530 (India Standard Time)"

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add minutes to a date object.</title>
</head>
<body>
</body>
</html> 

JavaScript Code:

var add_minutes =  function (dt, minutes) {
    return new Date(dt.getTime() + minutes*60000);
}
console.log(add_minutes(new Date(2014,10,2), 30).toString());

Sample Output:

Sun Nov 02 2014 00:30:00 GMT+0530 (India Standard Time)

Flowchart:

Flowchart: JavaScript  : Add  minutes to a  Date object

Live Demo:

See the Pen JavaScript - Add minutes to a Date object-date-ex- 6 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Promise.all method

const promise1 = Promise.resolve('First')
const promise2 = Promise.resolve('Second')
const promise3 = Promise.reject('Third')
const promise4 = Promise.resolve('Fourth')

const runPromises = async () => {
	const res1 = await Promise.all([promise1, promise2])
	const res2  = await Promise.all([promise3, promise4])
	return [res1, res2]
}

runPromises()
	.then(res => console.log(res))
	.catch(err => console.log(err))

The Promise.all method runs the passed promises in parallel. If one promise fails, the Promise.all method rejects with the value of the rejected promise. In this case, promise3 rejected with the value "Third". We're catching the rejected value in the chained catch method on the runPromises invocation to catch any errors within the runPromises function. Only "Third" gets logged, since promise3 rejected with this value.