Unexpected end of JSON input in Angular

Question

I am creating an app that has CRUD functionalities for localStorage. I am trying to save some data to localStorage via the method setItem(), but instead of successfully saving the data, I am getting the following error:

Error: Unexpected end of JSON input

Here is my Stackblitz URL: https://stackblitz.com/edit/github-efvm9d

To replicate the error:

Click on 'Add new product' link
Fill in the form and press the 'Add a product' button
Observe how the console outputs the error message Error: Unexpected end of JSON input

I am expecting to be able to add data to localStorage via the setItem() method.

Please explain why the downvote? I could improve the question. — aleksejjj
– aleksejjj, Commented Feb 14, 2019 at 15:12

Nguyen Phong Thien · Accepted Answer · 2019-02-14 15:28:43Z

2

the line localStorage.setItem("rubberboots", rubberboots); in your code is not correct. rubberboots is an Object not a string. You should do:

localStorage.setItem("rubberboots", JSON.stringify(rubberboots));

BTW, clear your localStorage before trying again, the current value of rubberboots in your localstorage could be null now. It will throw an error when you call JSON.parse() function

answered Feb 14, 2019 at 15:28

Nguyen Phong Thien

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3 Comments

aleksejjj Over a year ago

Thanks, but now the function addRubberboot() only adds an empty array to the localStorage so that the end result is [[]]. Can you tell me what is the issue?

Nguyen Phong Thien Over a year ago

ah, that is the different issue. I can help you to check it out tomorrow

aleksejjj Over a year ago

Thanks for the offer, but I already got help in another question: stackoverflow.com/questions/54697492/…

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