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Document Object
The following table lists the Some common properties of the Document object for the BOM:
of the genus |
say |
Alinkcolor |
activated link colors, such as <body alink= "COLOR" > definition of * |
BgColor |
the background color of the page, such as <body bgcolor= "COLOR" > definition of * |
Fgcolor |
The text color of the page, such as <body text= "COLOR" > definition of * |
LastModified |
Last modified page date, is a string |
LinkColor |
The color of the link, such as <body link= "COLOR" > definition of * |
Referrer |
in browser history, a position that is backward Url |
Title |
<title/> The text displayed in the label |
Url |
Of the currently loaded page. Url |
Vlinkcolor |
The colors of the links that have been visited, such as <body vlink= "COLOR" > definition * |
* object to using these properties because they refer to the old HTML feature in the <body/> label . You should replace them with style sheet scripts.
The document object also has a number of collections that provide access to the various parts of the loaded page. The following table lists these collections:
set together |
say |
Anchors |
The collection of all the anchors in the page |
Applets |
A collection of all applets in a page |
Embeds |
a collection of all embedded objects in the page (represented by the <embed/> label) |
Forms |
Collection of all forms in a page |
Images |
A collection of all the images in a page |
Links |
A collection of all the links in a page |
Similar to the Window.frame collection, you can refer to each collection of the Document object with numbers or names, that is, available document.images[0] or document.images[" Picture's name"] to access the image.
Location objects
The Location object represents the URL of a loaded window, and it can also resolve URLs.
Hash-If the URL contains #, the method returns the content after the symbol (for example, the hash of Http://www.somewhere.com/index#selection1 equals "#selection1").
host-the name of the server (such as www.wrox.com).
hostname--usually equal to host, sometimes omitting the front of www.
href-the full URL of the currently loaded page.
Pathname The part of the host name in the --url. For example, Http://www.somewhere.com/pictures/index.htm's pathname is "/pictures/index.htm".
The port of the request declared in Port--url. By default, most URLs do not have port information, so this property is usually blank. URLs such as http://www.somewhere.com:8080/index.htm have a port property equal to 8080.
protocolThe protocol used in--url, the part before the double slash (//). For example, the Protocol property in http://www.somewhere.com equals the Protocol property of Http:,ftp://www.somewhere.com equals ftp:.
Search-The part of a question mark (?) in the URL that executes a GET request, also known as a query string. For example, the search property in Http://www.somewhere.com/abc.htm?term=javascript equals? term=javascript
jump to a page, but do not want to access from the browser history, that is, you can not back, use the method location.replace("http://www.baidu.com") method.
Navigator Objects
Detects the version of the browser , the MIME type supported, and the installed add-in (plug-in). The object contains two child objects: A Plug-in object, a MIME type object.
appCodeName |
Code |
AppName |
Name |
AppVersion |
Version |
Language |
Language |
MimeType |
Represents a supported MIME type in an array |
Platform |
Machine type for compiling browsers |
Plugins |
To represent an installed add-in in an array |
UserAgent |
Table headers for user agents |
Screen Object
The Screen object contains on-screen information, usually containing the following properties (however, many browsers have their own properties added):
Height-the height of the screen, measured in pixels.
Width-The breadth of the screen, measured in pixels.
availheight-the height (in pixels) of the screen the window can use, minus the width of the taskbar, changing with the user's taskbar and not changing with the window, including the space required for operating system elements such as the Windows toolbar.
availwidth-the width of the screen that the window can use (in pixels), minus the height of the taskbar, and changing with the user's taskbar.
colordepth-The color depth of the user's screen, measured in bits per pixel. is actually the number of digits representing the color. Most systems use 32-bit.
The availheight and Availwidth properties are useful when determining the size of a new window. For example, you can populate the user's screen with the following code:
MoveTo (0,0);
Resizeto (Screen.availwidth,screen,availheight);
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