Swift: Dialog box

Initialization:
var alertController = UIAlertController(title: "Title", message: "Message", preferredStyle: .Alert)

iOS8: Objective-C: Dialog box

Initialization:
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Title" message:@"Message" preferredStyle:UIAlertControllerStyleAlert];

Objective-C: Dialog box

Initialization:
NSAlert *alert = [[NSAlert alloc] init];

[alert addButtonWithTitle:@"A"];

[alert addButtonWithTitle:@"B"];

[alert setMessageText:@"Message text"];

[alert setInformativeText:@"Informative text"];

[alert setAlertStyle:NSWarningAlertStyle];

Javascript: Dialog box

Code 1:
window.alert("Dialog");

Code 2:
alert("Dialog");

AppleScript: Dialog box

Code 1:
display dialog "Dialog" buttons {"A", "B"} default button "B" giving up after 3

Code 2:
display dialog "The Continuation Character test." buttons {"A", "B"} ¬
default button "B" giving up after 3