How to implement C callback function in Swift?

In JavaScript, how do you pass explicit arguments to a function from a function expression callback?

• When I have a function that needs to wait, and not be executed during scanning, but has arguments that need to be specified beforehand, I run into this problem: <button id="myButton">Hello</button> function show(msg) { return alert(msg); } $('myButton').addEventListener('click', show('How are you?')); The above is a basic example of what I'm talking about. The show(); function executes beforehand without me having to click on the button. Inline works fine but I do not want to go that road. How to I make the function wait until I have clicked the button but still have the specified arguments?

• Answer:

  All you have to do is wrap the function you want to call in a function expression (callback): <button id="myButton">Hello</button> function show(msg) { return alert(msg); } $('myButton').addEventListener('click', function() { show('How are you?'); });