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Get a random item from an Array
Use splice() if you want to delete an element from an array
Use map() when looping through arrays
Stop using "=="
Get a random number
The trim() method
The isFinite() method
The toFixed() method
This is a way you can empty an array in JavaScript
Destructuring
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Top comments (6)
Please do not use map instead of forEach as a rule.
Map only makes sense if you are mapping.
This is easily misunderstood by beginners i my experience. :)
Totally agree!
Yep 👍
Doing
myArray.length = 0;is not the way, just go with[], easier, more performant and less error-prone.I also think that
.mapinstead of.forEachorforis incorrect, you should use the last two to loop arrays and the.maponly if you want a new array instance, by the way.mapis very slow.Wow, man. Amazing article and tips!
I'll be sure to use these a lot!
glad to hear that you liked this mate