Question

Possible Duplicate:
Delete an array key when it contains a string in javascript

by using jquery, underscore or native javaScript I would like to delete or add element to an array.

here is my code;

var a = ['4', '5'];
var remove = false/true; 

if(!remove) {
     a.push('6'); // it works
} else {
     a.remove(5); // I have no idea how to perform this in a very dry way
}

Answer 1

If you combine NULL and dystroy’s answer you can get Niko’s answer(ish) in pure js:

a.splice(a.indexOf('5'),1);

Or if you wanted to remove multiple ‘5’s

var p;
while( (p = a.indexOf('5')) != -1 ){
    a.splice(p, 1);
}

A neater method, that is rather unoptimal, only modern-browser supported (and also creates a new array) – but is still valid and more flexible is:

a = a.filter(function(v){
  return v != '5';
});