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Practice

Browser Window Object

The Window object, representing a browser window or tab, is the topmost object of a web page and provides various functionalities necessary for interacting with the web page.

The Window object signifies the browser window, and includes several built-in objects, functions, and variables.

The document object, which represents the web page's document, is also a property of the Window object.


Key Methods of the window object​

  1. alert(): Displays a dialog box with a specified message.
alert method
window.alert('Hello!'); // A dialog box with the message "Hello!" will be displayed.

  1. prompt(): Displays a dialog box that prompts the user for input.
prompt method
let name = window.prompt('Please enter your name.'); // The user's input will be stored in the name variable.

  1. setTimeout(): Executes a function after a specified amount of time has elapsed.
setTimeout method
window.setTimeout(() => {
  alert('2 seconds have passed!');
}, 2000); // After 2 seconds, a dialog box with the message "2 seconds have passed!" will be displayed.

  1. location: An object that contains information and methods related to the current window's URL.
location object
console.log(window.location.href); // Outputs the current page's URL.

Important Notes​

When using methods or properties of the Window object, in most cases, the window. prefix can be omitted. For example, you can simply write alert("Hello!") instead of window.alert("Hello!").

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