How can i remove an element from a javascript array by its value?

To remove an element from an array by its value, you can use the `filter` method. Example:

let nums = [1, 2, 3, 4, 5];
let result = nums.filter(num => num !== 3);
console.log(result);  // [1, 2, 4, 5]

The `filter` method creates a new array with all elements that pass the test provided by the given function.