now method

Returns the number of milliseconds, accurate to a thousandth of a millisecond, from the start of document navigation to the time the now method was called.

Internet Explorer 10

 

Syntax

var retVal = performance.now();

Parameters

retVal [out, retval]

Type: DOMHighResTimeStamp

Remarks

When taking web application performance measurements, use this method instead of the Date.now method to ensure that the returned timing values have a millisecond resolution and monotonically increase (where later values are never less than earlier values).

See also

performance

 

 

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