If I have array, for example:
a = ["a", "b", "c"] I need something like
a.remove("a"); How can I do this?
- Settle Down. I'm coming up with a duplicate for you since you clearly didn't search for yourself.user1106925– user11069252012-06-07 22:20:12 +00:00Commented Jun 7, 2012 at 22:20
- arr.splice(arr.indexOf(elm),1) will remove an element 'elm' from array 'arr'Gautam Sharma– Gautam Sharma2018-08-21 19:34:46 +00:00Commented Aug 21, 2018 at 19:34
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6 Answers
var newArray = []; var a=["a","b","c"]; for(var i=0;i<a.length;i++) if(a[i]!=="a") newArray.push(a[i]); As of newer versions of JavaScript:
var a = ["a","b","c"]; var newArray = a.filter(e => e !== "a"); 4 Comments
Derek 朕會功夫
You know there is
.splice right?
Danilo Valente
Yes, I know. But I'm considering that the array can have more than one "a"
Derek 朕會功夫
I didn't think of that. Good point. +1
Adham
The array has only unique values !
remove = function(ary, elem) { var i = ary.indexOf(elem); if (i >= 0) ary.splice(i, 1); return ary; } provided your target browser suppports array.indexOf, otherwise use the fallback code on that page.
If you need to remove all equal elements, use filter as Rocket suggested:
removeAll = function(ary, elem) { return ary.filter(function(e) { return e != elem }); } 
Comments
I came up with a simple solution to omit the necessary element from the array:
<script> function myFunction() { var fruits = ["One", "Two", "Three", "Four"]; <!-- To drop the element "Three"--> <!-- splice(elementid, number_of_element_remove) --> fruits.splice(2, 1); var x = document.getElementById("demo"); x.innerHTML = fruits; } </script> 1 Comment
Milinda Bandara
this is valid for Array and arraylist both
let xx = ['a','a','b','c']; // Array let elementToRemove = 'a'; // Element to remove xx =xx.filter((x) => x != elementToRemove) // xx will contain all elements except 'a' 
Comments
If you don't mind the additional payload (around 4 kB minified and gzipped) you could use the without function of the Underscore.js library:
_.without(["a", "b", "c"], "a"); Underscore.js would give you this function + a lot of very convenient functions.
