Question

115

Difference between moment.toString() and moment.toISOString()

rated 0 times [ 117] [ 2] / answers: 1 / hits: 32884 / 9 Years ago, mon, april 20, 2015, 12:00:00

I have reading moment.js document, there have a moment.toISOString() function for helps to formats a string to the ISO8601 standard.

Also there have a another one reason for why we use moment.toISOString()

moment.toISOString() function using for performance reasons.

I don't know toISOString() the performance best than moment.toString().But only the result was difference while using moment.toString() and moment.toISOString().

So my question is.

Why we should use moment.toISOString()? for performance reasons?

And what is the difference between moment.toISOString() and moment.toString()?

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mckinleykeyshawnb

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answered 9 Years ago beatrices · Accepted Answer

You can give a look directly in momentJS source code for such issue :).
Here it is.

export function toString () {

    return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');

}



export function toISOString () {

    var m = this.clone().utc();

    if (0 < m.year() && m.year() <= 9999) {

        if ('function' === typeof Date.prototype.toISOString) {

            // native implementation is ~50x faster, use it when we can

            return this.toDate().toISOString();

        } else {

            return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');

        }

    } else {

        return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');

    }

}

toString use .locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ') which is momentJS source code, executed in Javascript

toISOString() use javascript Date object (this.toDate().toISOString();) which is compile and managed by your browser.

Native implementation is ~50x faster, use it when we can

However, I think such difference is not relevant for a most projects, but now you know. ;)