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JavaScript Object-Oriented JavaScript: Challenge Rendering the Game startGame() Method Solution

Start button display

Hello,

I have an issue with the start button display not changing to 'none' when using 'this' to address it in the event listener. When I change it to use document.getElementById("begin-game") it works as expected. When it is this.style.display = "none" I get a TypeError:

Uncaught TypeError: Cannot set property 'display' of undefined at HTMLButtonElement.<anonymous> (app.js:8) (anonymous) @ app.js:8

Any thoughts?

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1 Answer

Steven Parker
Steven Parker
231,261 Points

Did you set up your handler using a arrow function (with a "=>")? Arrow functions don't define "this" like conventional functions do.

If that's not it, please show your code so we can give you a specific answer.

I did indeed use an arrow function. Is there a different way to use this with arrow functions?

Steven Parker
Steven Parker
231,261 Points

Yes, you can establish a parameter to receive the event object, and use the "target" attribute on it instead of "this".