Can you explain the distinction between Uint8Array and Uint8ClampedArray within JavaScript?
I've heard that Uint8ClampedArray is specifically utilized for pixel manipulations on canvas. Could you elaborate on why this array type is recommended for such tasks and what advantages it offers?
After reviewing the examples provided for Uint8ClampedArray and Uint8Array, it appears that the main distinction lies in how values are handled upon assignment.
When attempting to assign a value outside the range of 0-255 to an element in a clamped array, it will automatically default to either 0 or 255 based on whether the value is lower or higher than the limits. On the other hand, a standard Uint8Array simply takes the first 8 bits of the value without any adjustment.
Here are a few examples:
var x = new Uint8ClampedArray([17, -45.3]);
console.log(x[0]); // 17
console.log(x[1]); // 0
console.log(x.length); // 2
var x = new Uint8Array([17, -45.3]);
console.log(x[0]); // 17
console.log(x[1]); // 211
console.log(x.length); // 2
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