How Can I Implement somthing like delegate(c#) in javascript?

Question

I want to have a delegate of a function in javascript is it posible have something like delegate concept like c# in javascript?

Answer 1

They're called function expressions

See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Functions for a lengthy discourse

const square = function(number) { return number * number }
var x = square(4) // x gets the value 16