[javascript] Getting the last element of a split string array

I need to get the last element of a split array with multiple separators. The separators are commas and space. If there are no separators it should return the original string.

If the string is "how,are you doing, today?" it should return "today?"

If the input were "hello" the output should be "hello".

How can I do this in JavaScript?

var item = "one,two,three";
var lastItem = item.split(",").pop();
console.log(lastItem); // three

You can also consider to reverse your array and take the first element. That way you don't have to know about the length, but it brings no real benefits and the disadvantage that the reverse operation might take longer with big arrays:

array1.split(",").reverse()[0]

It's easy though, but also modifies the original array in question. That might or might not be a problem.

Reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse

Probably you might want to use this though:

array1.split(",").pop()

You can access the array index directly:

var csv = 'zero,one,two,three'; csv.split(',')[0]; //result: zero csv.split(',')[3]; //result: three

var title = 'fdfdsg dsgdfh dgdh dsgdh tyu hjuk yjuk uyk hjg fhjg hjj tytutdfsf sdgsdg dsfsdgvf dfgfdhdn dfgilkj,n, jhk jsu wheiu sjldsf dfdsf hfdkdjf dfhdfkd hsfd ,dsfk dfjdf ,yier djsgyi kds';
var shortText = $.trim(title).substring(1000, 150).split(" ").slice(0, -1).join(" ") + "...More >>";

There's a one-liner for everything. :)

var output = input.split(/[, ]+/).pop();

And if you don't want to construct an array ...

var str = "how,are you doing, today?";
var res = str.replace(/(.*)([, ])([^, ]*$)/,"$3");

The breakdown in english is:

/(anything)(any separator once)(anything that isn't a separator 0 or more times)/

The replace just says replace the entire string with the stuff after the last separator.

So you can see how this can be applied generally. Note the original string is not modified.

array.split(' ').slice(-1)[0]

The best one ever and my favorite.