Comment by qwery

2 years ago

Is the use of the "E" notation common in JS? I can see that it (could be) less bytes, obviously more efficient for bigger values... Looking at the script I can see it is minified or whatever we call that these days. I guess my question really is: did someone write "5E3" or did the minifier choose it?

(Sorry this is heading into the weeds, but I'm not really a web developer so maybe someone can tell me!)

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qwery

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d3w4s9  2 years ago

Because 5E3 is shorter than 5000, just like you can often see !0 to get "true" in minimize code because it saves two characters.

  • pbhjpbhj  2 years ago

    In js I thought 1==true, and 1 is shorter than !0 ??

    Never seen the use of exponential notation for numbers in js though (not a surprise, I'm not really a programmer), it seems sensible to me from the point of shifting the domain from ms to seconds.

    • ayhanfuat  2 years ago

      > In js I thought 1==true, and 1 is shorter than !0 ??

      `1==true` but `1!==true` (`===` and `!==` check for type equality as well and while `!0` is a boolean, `1` is not.

    • neuromanser  2 years ago

      !0 === true, but 1 !== true. I don't recall ever needing the strict comparison, but it seems to tickle the fancy of most js programmers.

    • the_gipsy  2 years ago

      Double-equals behaves differently than triple-equals. Minifiers probably can't swap them safely.