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Step 1
In this project, you are going to learn intermediate Object Oriented Programming principles by building a platformer game. All of the HTML and CSS have been provided for you.
Start by using `document.getElementById()` to get the `#start-btn` and `#canvas` elements.
Store them in `const` variables named `startBtn` and `canvas` respectively.
Vượt qua bài kiểm tra hiện tại để mở khóa bài tiếp theo.
main.html
UTF-8 • Tab Size: 2Kiểm tra bài:⌘↵