What is the in-place alternative to Array.prototype.filter()

Question

I\'ve got an array that I would like to remove some elements from. I can\'t use Array.prototype.filter(), because I want to modify the array in place (because i

Answer 1

You could use the following:

array.splice(0, array.length,...array.filter(/*YOUR FUNCTION HERE*/))

Explanation:

• Splice acts in place
• First argument means we start at the start of the array
• Second means we delete the entire array
• Third means we replace it with its filtered copy
• The ... is the spread operator (ES6 only) and changes each member of the array into a separate argument