Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I encountered this code today:
b = setTimeout(function () {
// do some javascript stuff here
}, 8e3)
The timeout is set to 8e3. What time does this equate to in milliseconds, and why would anyone choose this strange notation? The code appears to be fully functional.
8e3is eight times ten to the power of three, that is, 8000. This is called scientific (or exponential) notation. Just imagine the “e” stands for “*10^”.In this case there isn’t much point in using that notation, but once you start getting to larger numbers, exponential notation becomes more readable. To figure out how much “1000000000” is you’d have to count zeros, but 1e9 is immediately obvious.