jQuerybeast jQuerybeast - 6 months ago 29
Javascript Question

Localstorage & JSON: How can I delete only 1 array inside a key since localstorage.removeItem requires the entire key

I have this in my localStorage:

[{"id":"item-1","href":"google.com","icon":"google.com"},
{"id":"item-2","href":"youtube.com","icon":"youtube.com"},
{"id":"item-3","href":"google.com","icon":"google.com"},
{"id":"item-4","href":"google.com","icon":"google.com"},
{"id":"item-5","href":"youtube.com","icon":"youtube.com"},
{"id":"item-6","href":"asos.com","icon":"asos.com"},
{"id":"item-7","href":"google.com","icon":"google.com"},
{"id":"item-8","href":"mcdonalds.com","icon":"mcdonalds.com"}]


How can I delete only the
id:item-3
when
localstorage.removeItem
requires entire key?

I use this method to update a specific value in an array: http://jsfiddle.net/Qmm9g/ so using the same method I want to delete specific array.

Note that there is already a button to delete. That button I want a function which will delete the entire array (
{"id":"item-3","href":"google.com","icon":"google.com"}
) with
ID:item-3

Answer

Something like this would work, I'm not sure if it's the best way to do it though. There maybe a better local storage specific way -

var json = JSON.parse(localStorage["results"]);
for (i=0;i<json.length;i++)
            if (json[i].id == 'item-3') json.splice(i,1);
localStorage["results"] = JSON.stringify(json);
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