+ 2
Javascript
How to use .filter() ?
3 ответов
+ 6
The filter() method creates a new array filled with elements that pass a test provided by a function.
The filter() method does not execute the function for empty elements.
The filter() method does not change the original array.
+ 2
Filter is array method, and it will loop trought array and run some function per each item of array.
This function you type yourself, in my code i used arrow function syntax (mostly this is used now, but you can use normal function also), this function mostly have if/else to check something (do filtering).
Filter method at end return new filteted array, with items passed check.
This is code to filter only even numbers from array, and I explained how it works step by step:
https://code.sololearn.com/WFA08TpNzURi/?ref=app
+ 2
Just adding reference links cause you tagged both Javascript and CSS
https://developer.mozilla.org/en-US/docs/Web/CSS/filter
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter