Window Objects

Alert

window.alert('Hello World'); //usually we skip 'window.'

Prompt

const input = prompt();
alert(input);

- prompt 창을 띄우며 그 곳에 error message를 입력할 수 있다.

Confirm

if(confirm('Are you sure')) {
    console.log('YES');
} else {
    console.log('NO');
}

- used before when deleting something to confrim of the decision

Outter & Inner height and width

let height;
let width;

height = window.outerHeight;
width = window.outerWidth;

height = window.innerHeight;
width = window.innerWidth;

console.log(height);
console.log(width);

Scroll points

let val;
val = window.scrollY;
val = window.scrollX;

console.log(val);

- used when there is a scroll bar

- X is for the width, and Y is for the height

Location Object

let val;

val = window.location;
val = window.location.hostname;
val = window.location.port;
val = window.location.href;
val = window.location.search;

console.log(val);

- there are tons of inforamtion in array about port number, IPs, domain, address, etc.

Redirect

window.location.href = 'http://google.com';

- it redirects the browser to specifically mentioned http address

History Object

let val;

window.history.go(-1); // -1 means the recent page that I visited
val = window.history.length;

console.log(val);

- used when you want to get the browsing history of currently opened browser

- 'go' method takes a parameter of a negative number which takes back to the sites that I have visited starting from -1, -2, -3, ...

Navigator Object

let val;

val = window.navigator;
val = window.navigator.appName;
val = window.navigator.appVersion;
val = window.navigator.userAgent;
val = window.navigator.platform; //yields Win32 for Windows
val = window.navigator.language;

console.log(val);

- there are tons of information in array about the browser