How to get substring from string?

Question

I'm trying to get the last word from the string:

var str =  "Member/GetRefills";
var param = str.split(" ").pop();
console.log(param);

Expected result:

GetRefills

And pop() removes the last entry from an array. So if you split on '/' and then pop() you will actually get "Member" and not "GetRefills". — Nawed Khan
– Nawed Khan, Commented Sep 19, 2019 at 17:29
@NawedKhan stick the following in your browser console. That is not correct. "Member/GetRefills".split('/').pop() — Taplar
– Taplar, Commented Sep 19, 2019 at 17:31
I haven't downvoted, though the avoidance of pop in favor of effectively writing what pop does, is odd. — Taplar
– Taplar, Commented Sep 19, 2019 at 17:38

ray · Accepted Answer · 2019-09-19 17:26:48Z

7

Try splitting on "/" instead.

const str = "Member/GetRefills";
const param = str.split("/").pop();

answered Sep 19, 2019 at 17:26

ray

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3 Comments

Nawed Khan Over a year ago

pop() removes the last entry from an array. So you will actually get "Member" and not "GetRefills"

canon Over a year ago

@NawedKhan nope.

Nawed Khan Over a year ago

I take that back. "The pop() method removes the last element from an array and returns that element" so if you read the returned value it will be "GetRefills". However if you read the array now it will be one element less (not the case here, so never mind)

ray · Accepted Answer · 2019-09-19 18:29:49Z

0

Do this instead:

var param = str.split('/');
var paramLast = param[param.length - 1];

pop() is not always a good practice. pop() removes the last element of an array which in some cases might cause problems.

param[param.length - 1] does the same job as pop() but more safely.

edited Sep 19, 2019 at 18:29

ray

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answered Sep 19, 2019 at 17:26

Evik Ghazarian

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2 Comments

ray Over a year ago

This assumes a single slash, which works in this specific case but would fail for 'Member/Bob/GerRefills'. Hence pop instead of [1].

Evik Ghazarian Over a year ago

I was actually updating the answer

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