Clash Royale CLAN TAG#URR8PPP

Cannot getItem from sessionStorage in ComponentWillMount?

Just looking to pull in some data sitting in sessionStorage inside of componentWillMount but I continue running into: cannot getItem of undefined. Here is what this looks like:

sessionStorage

componentWillMount

cannot getItem of undefined

componentWillMount()
console.log(window.sessionStorage); // logs sessionStorage
console.log(window.sessionStorage.getItem('some-key')); // errors out here



EDIT: Here is a screenshot. The key is different because I was just using something else for the example, but the error is the same.

Here is the error: TypeError: Cannot read property "getItem" from undefined. Odd enough, it works in componentDidMount.

TypeError: Cannot read property "getItem" from undefined

For clarification: I'm using window.sessionStorage instead of sessionStorage because for some reason it can't recognize it without appending it to the window object.

window.sessionStorage

sessionStorage

window

Found one or two other questions on similar topics but nothing to help explain why getItem is not available on sessionStorage.

getItem

sessionStorage

window.sessionStorage

window.

sessionStorage

1 Answer
1

You can use sessionStorage in ComponentDidMount.

sessionStorage

ComponentDidMount

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