Delete an array key when it contains a string in javascript

Question

I have an array in javascript that looks like this:

arr = [\"md51234\",\"md55234\"]

I\'m trying to remove an item from this by doing:

Answer 1

Different approach using jQuery:

arr = ["a", "b", "c", "d", "e"];

Remove item by index:

arr = jQuery.grep(arr, function(value, index) {
    return index != 2;
});

Remove item by value:

arr = jQuery.grep(arr, function(value, index) {
    return value != "a";
});