This content originally appeared on DEV Community and was authored by Pasca Vlad
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Get a random item from an Array
Vlad Pasca@vladpasca5
JavaScript tipđź’ˇ
This is how you get a random item from an array using JavaScript
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17:05 PM - 07 Sep 2021
Use splice() if you want to delete an element from an array
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
If you want to delete an element from an array use "splice()" not "delete"
"delete" only replaces the item with "undefined" while "splice()" will remove that item from the array
See how this works here
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16:55 PM - 09 Sep 2021
Use map() when looping through arrays
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
Stop using "forEach" or "for" loops to loop through an array's items
Instead, start using "map" like in this example
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16:56 PM - 11 Sep 2021
Stop using "=="
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
Use "===" instead of "=="
"===" compares the value and the type while "==" compares only the value
See the difference here
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16:58 PM - 13 Sep 2021
Get a random number
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
This is how you get a random number in a specific range
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16:56 PM - 15 Sep 2021
The trim() method
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
Do you use the "trim()" method?
This method removes the whitespace from both sides of a string
You can see how it works here
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16:55 PM - 17 Sep 2021
The isFinite() method
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
You can verify the argument before passing it to 'isFinite()'
The "isFinite()" function determines whether the passed value is a finite number.
Here is how this works
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17:05 PM - 21 Sep 2021
The toFixed() method
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
The toFixed() method converts a number into a string, and then it rounds the string to a specified number of decimals.
You can see how it works here
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16:55 PM - 23 Sep 2021
This is a way you can empty an array in JavaScript
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
You can use the syntax "array.length = 0" to empty an array
Here is how it works
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16:56 PM - 25 Sep 2021
Destructuring
Vlad Pasca@vladpasca5JavaScript tipđź’ˇ
Destructuring assignment makes it possible to unpack values from arrays, or properties from objects, into distinct variables.
Here is how this works
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16:58 PM - 27 Sep 2021
I hope found this useful and if you did please let me know. If you have any questions feel free to DM me on Twitter.
This content originally appeared on DEV Community and was authored by Pasca Vlad
Pasca Vlad | Sciencx (2021-10-01T05:36:20+00:00) 10 JavaScript tips that can help you understand this programming language better. Retrieved from https://www.scien.cx/2021/10/01/10-javascript-tips-that-can-help-you-understand-this-programming-language-better/
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