PARMANOIR

In Javascript, you use document.getElementById('myObject') to get an object and change its visibility, style, … in fact, getElementById gets a pointer to the object you see on the page. Outlets are just like that : in your ObjC class, you use IBOutlet to define pointers to your interface objects. You don't have to call any getElementById as they will be automatically populated upon NIB loading.

@interface ApplicationController : NSObject {
	// Define an outlet to a textfield
	IBOutlet	NSTextField*		textfield;
}

To connect your textfield variable, right-drag from your instance to the interface element you want a pointer to. After the NIB is loaded, you will then be able to interact with it, like change its value with [textfield setStringValue:@"set by code"]];.