get screen size in javascript

You can get the width and height of the user's screen using the screen object in JavaScript:

index.tsx
let screenWidth = window.screen.width;
let screenHeight = window.screen.height;

console.log("Screen width: " + screenWidth);
console.log("Screen height: " + screenHeight);
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This will give you the screen resolution in pixels. Note that this may not be the same as the browser window size or the device's physical screen size.