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JavaScript Learning--bom Objects

Source: Internet
Author: User
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1. BOM object: Browser object model (manipulating browser-related content)

2. Window Object

Window object represents open windows in the browser

SetInterval (): It has a return value that is primarily provided to clearinterval using

SetTimeout (): It has a return value that is primarily provided to cleartimeout using

Clearinterval (): This method can only clear timed actions set by setinterval

Cleartimeout (): This method can only clear timed actions set by SetTimeout

A few ways to pop up a box:

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>Window object</title>6         <Script>7             //Warning Box8 Alert ("ah ha! ");9             //Confirm Delete BoxTen Confirm ("are you sure you want to delete it? "); One             //Input Box A Prompt ("Please enter the price"); -         </Script> -     </Head> the     <Body> -     </Body> - </HTML>

3. History Object

The History object contains the URLs that the user has visited (in a browser window)

Before executing this code, there should be a history page, which can be a hyperlink to this page.

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>History Object</title>6         <Script>7             functionFanhui () {8 History.go (-1);9                 //History.back ();Ten             } One         </Script> A     </Head> -     <Body> -         <inputtype= "button"value= "Back to previous page"onclick= "Fanhui ()" /> the     </Body> - </HTML>

Go (parameters)

Parameters: 1 Returns the previous history page, 2 returns to the previous history page, and 1 goes to the next history page.

3. Location Object

The Location object contains information about the current URL.

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>Location Object</title>6     </Head>7     <Body>8         <inputtype= "button"value= "Jump to History page"onclick= "javascript:location.href= ' 02_history object. html '"/>9     </Body>Ten </HTML>

JavaScript Learning--bom objects

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