javascript toISOString() ignores timezone offset [duplicate]

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moment.js is great but sometimes you don’t want to pull a large number of dependencies for simple things.

The following works as well:

    var tzoffset = (new Date()).getTimezoneOffset() * 60000; //offset in milliseconds
    var localISOTime = (new Date(Date.now() - tzoffset)).toISOString().slice(0, -1);
    
    console.log(localISOTime)  // => '2015-01-26T06:40:36.181'

The slice(0, -1) gets rid of the trailing Z which represents Zulu timezone and can be replaced by your own.

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