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JavaScript React by Example Building the Application Adding Guests to the List

Posted by iwgpnjvycw
iwgpnjvycw
8,577 Points

setState not persisting when page is refreshed

I'm able to add a name to the array, and I can see the array length change in the dev tools, but when I refresh the page, the name I added disappears from the guest array. Has anyone else had this problem?

2 Answers

Matthew Lang
Matthew Lang
13,483 Points
Matthew Lang
Matthew Lang
13,483 Points

When you refresh your page, you are essentially re-loading your app from scratch. That means, all data you added will be refreshed unless you store it somewhere and load it when your application begins.

iwgpnjvycw
iwgpnjvycw
8,577 Points

Oh of course! That was a silly question. Thanks for answering!

khalil et-tkhyly
khalil et-tkhyly
6,140 Points
khalil et-tkhyly
khalil et-tkhyly
6,140 Points

refreshing the page cause the app to get back to its initial state (your code),however if you're curious about how you can save the state, one solution is to use localStorage, so whenever a change happens to the state you save it to the localstorage and when your app loads grab the stored state in localstorage and assign it to app's state and then your data will be available even when refreshing. hope that helps you