jQuery remove last element from array on back button

Question

Trying to remove the last element from an array when a back button is clicked. Console is showing the correct elements in the array. it's looking like the array.slice function isn't working however I can't see why.

Code is:

$('#backButton .back').click(function(e) {
    e.preventDefault();
    answers.slice(0,-1);
    console.log(answers);
});

Answers array is showing the correct result apart from the last element in the array isn't being removed. Thanks!

`answers.splice(answers.length - 1, 1);` – Tushar May 31 '16 at 11:00 — Tushar, May 31 '16 at 11:00
That should work fine. Any error in the console? – Bhojendra Rauniyar May 31 '16 at 11:01 — Bhojendra Rauniyar, May 31 '16 at 11:01
No errors in the console - This solved the problem. Thanks! – Warve May 31 '16 at 11:01 — Warve, May 31 '16 at 11:01

Pranav C Balan · Accepted Answer · 2016-05-31T11:03:14.907

4

The slice() method just returns the portion of an array it will not update the original array. You can use splice(-1, 1) or pop() method to remove the last element from array.

$('#backButton .back').click(function(e) {
     e.preventDefault();
     answers.pop();
     console.log(answers);
});

edited May 31 '16 at 11:03

answered May 31 '16 at 11:00

Pranav C Balan

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Will that only remove the last result from the array? – Warve May 31 '16 at 11:01

jQuery remove last element from array on back button

1 Answers1