Getting Time Difference Between Dates in JavaScript
When developing applications that involve managing time frames, accurately calculating the difference between dates is crucial. In JavaScript, this task can be accomplished effortlessly by leveraging the built-in Date object.
Solution:
Code Sample:
var startTime = new Date(); var endTime = new Date(startTime.getTime() + 3600000); // Add one hour to start time var newEndDate = new Date(endTime.getTime() - startTime.getTime());
Explanation:
The and - operators trigger JavaScript type coercion and invoke the valueOf() method of the Date objects. In the Date prototype, the valueOf() method is equivalent to calling getTime().
Therefore, the following expressions all evaluate to the same value:
date.getTime() === date.valueOf() === (0 + date) === (+date)
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