How to remove a specific element in array in JavaScript [duplicate]

Question

If I have array, for example:

a = ["a", "b", "c"] 

I need something like

a.remove("a"); 

How can I do this?

Answer 1

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"); 

Answer 2

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 }); } 

Answer 3

If you're using a modern browser, you can use .filter.

Array.prototype.remove = function(x){ return this.filter(function(v){ return v !== x; }); }; var a = ["a","b","c"]; var b = a.remove('a'); 

Answer 4

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> 

Answer 5

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' 

Answer 6

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.