CODEWITHSUNDEEP
javascriptdate
Alko
Alko

Reputation: 1439

Javascript Invalid Date to string format

I'm trying to parse time which is retrieved from MySql via jSon

something like:

new Date('12:15:24').toString('h:mmtt');

but I keep getting Invalid Date in console

What I need to do is convert 24 hour format into 12 hour am/pm and vice versa

Upvotes: 0

Views: 376

Answers (3)

Alongkorn
Alongkorn

Reputation: 4197

it is better to use moment.js to handle datetime like this

// get hours:minutes:seconds of the date 31-Jan_2016 9.31.21
console.log(moment('2016-01-31 09:30:21').format('HH:mm:ss'))

// get current hours:minutes:seconds
console.log(moment().format('HH:mm:ss')) 

// get current date-month-year hours:minutes:seconds
console.log(moment('2016-01-31 09:30:21').format('DD-MM-YYYY HH:mm:ss')) 
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>

Upvotes: 0

Edmar Miyake
Edmar Miyake

Reputation: 12390

I would consider using date/time manipulation library, such as http://momentjs.com/ .

You can also achieve what you want by splitting the time string and creating a Date() object. Example: 

var time = '12:15:24';
var timePortions = time.split(':');
new Date(0,0,0,timePortions[0], timePortions[1], timePortions[2])

This is not a safe way to manipulate date/time, though.

Upvotes: 0

nnnnnn
nnnnnn

Reputation: 150010

The Date() constructor only likes a very restricted set of date formats. If your input format is fixed at 'hh:mm:ss' it is probably easier to format it using a simple string replace:

function formatTime(time) {
  return time.replace(/(\d?\d)(:\d\d):(\d\d)/, function(_, h, m) {
    return (h > 12 ? h-12 : +h === 0 ? "12" : +h) + m + (h >= 12 ? "pm" : "am");
  });
}

console.log( formatTime('00:15:24') );
console.log( formatTime('09:15:24') );
console.log( formatTime('10:15:24') );
console.log( formatTime('11:15:24') );
console.log( formatTime('12:15:24') );
console.log( formatTime('13:15:24') );
console.log( formatTime('14:15:24') );

Further reading:

Upvotes: 2

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