Updating localstorage arrays in Javascript - Stack Overflow

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I'm trying to store and update an array in the localstorage using JSON.parse/stringify. But it doesn't seem to be working.

    yesArray = JSON.parse(localStorage.getItem(yesArray));
    yesArray.push("yes");
    localStorage.setItem("yesArray", JSON.stringify(yesArray));

Am I all wrong with this?

I'm trying to store and update an array in the localstorage using JSON.parse/stringify. But it doesn't seem to be working.

    yesArray = JSON.parse(localStorage.getItem(yesArray));
    yesArray.push("yes");
    localStorage.setItem("yesArray", JSON.stringify(yesArray));

Am I all wrong with this?

• javascript
• arrays
• json
• local-storage

Share Improve this question Follow asked Dec 6, 2016 at 0:04 SausejiiSausejii 6311 gold badge11 silver badge55 bronze badges 2

• What error do you see in console? – Ajay Narain Mathur Commented Dec 6, 2016 at 0:07
• 5 getItem(yesArray) -> getItem("yesArray") typo? – Alexander O'Mara Commented Dec 6, 2016 at 0:08

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2 Answers 2

Sorted by: Reset to default 3

This seems to be the problem with passing the key of local storage without quotes.

While reading from local storage use the key as argument as it stores the value as key/value pairs.

yesArray = JSON.parse(localStorage.getItem("yesArray"));

Missing quotes around yesArray in the first line?

yesArray = JSON.parse(localStorage.getItem('yesArray'));

Sample:

var yesArray = [];
localStorage.setItem('yesArray', JSON.stringify(yesArray));
yesArray = JSON.parse(localStorage.getItem('yesArray'));
yesArray.push('yes');
localStorage.setItem('yesArray', JSON.stringify(yesArray));
JSON.parse(localStorage.getItem('yesArray')); // Returns ["yes"]

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