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lang-js
setTimereturns a numeric millisecond timestamp, not a date object. (Don’t think you can do a one-liner.)var in30Mins = new Date(+new Date() + 1.8e6)is a one–liner, but not sure it's any better than a two–liner. ;-)+new Date()is not generally recommended: stackoverflow.com/a/221565 However, using the info from that link, I believe the following is fine:new Date(Date.now() + (30 * 60 * 1000))