hacer redonda una imagen con css in javascript

Assuming you have an image with class my-image, you can make it round with CSS using border-radius property:

.my-image {
  border-radius: 50%;
}
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To set this CSS property using JavaScript, you can access the element using document.querySelector and set its style property as follows:

index.tsx
const myImage = document.querySelector('.my-image');
myImage.style.borderRadius = '50%';
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This will make the image appear round.