The complete analysis of JS window event

S-window object's methods and property data

HXPD posted on 2007-05-08 21:58:18 The Windows object's open, close, alert, confirm, prompt, SetTimeout, cleartimeout, SetInterval, Use of Clearinterval, Moveby, Resizeby, Scrollby methods

Mastering the use of the MoveTo, Resizeto, ScrollTo, and Print methods of the Window object

Proficiency in the use of the Window object's status, location, name, self, and opener property is one of the top-level objects of the client-side JavaScript, as long as the browser window is open, regardless of whether there are open pages in that window. When a body, frameset, or frame element is encountered, an instance of the Window object is created automatically. Also, an instance of the object can be created by the window.open () method. Because the window object is a common ancestor of most other objects, you can omit a reference to the Window object when invoking the methods and properties of the Window object. For example: Window.document.write () can be simply written as: document.write (). You can omit the window's instance name when you PIDM minimises any methods and properties of the Window object in the window. For example, when you set the Status property for the current Mywin window, you can use status instead of Mywin.status. However, you must use the instance name when you call the Location property, the Close () method, or the open () method in event handling.

Methods for 6-2-1 Window objects

The Window object has the following methods:

Open

Close

Alert

Confirm

Prompt

SetTimeout

Cleartimeout

SetInterval

Clearinterval

Moveby

MoveTo

Resizeby

Resizeto

Scrollby

ScrollTo

Find

Back

Forward

Home

Stop

Print

Blur

Focus

Captureevent

Enableexternalcapture

Disableexternalcapture

Handleevent

Releaseevent

Routeevent

Scroll

1. Open method

Syntax format:

window.open (URL, window name, window style)

Function: Opens a new window and loads the Web page with the specified URL address in the window.

Description

The Open method opens a new browser window and loads a specified URL address in a new window;

Open method when opening a new browser window, you can also specify the name of the window (the second parameter);

Open method when opening a new browser window, you can also specify the style of the window (the third parameter),

The window style has the following options, these options can be multi-select, if multiple selection, the options are separated by commas:

Toolbar: Specifies whether the window has a standard toolbar. When the value of this option is 1 or yes, there is a standard toolbar that indicates that there is no standard toolbar when the value of this option is 0 or no;

Location: Specifies whether the window has an address toolbar, and the value and meaning of the option is the same as toolbar;

Directories: Specifies whether the window has a link toolbar, the value and meaning of the option is the same as toolbar;

Status: Specifies whether the window has a status bar, the value and meaning of the option is the same as toolbar;

MenuBar: Specifies whether the window has a menu, the value and meaning of the option is the same as toolbar;

ScrollBar: Specifies whether there are scroll bars when the current window document is larger than the window, and the value and meaning of the option is the same as toolbar;

Resizable: Specifies whether the window can be resized, and the value and meaning of the option is the same as toolbar;

Width: Specifies the width of the window in pixels, which has been replaced by innerwidth;

Height: Specifies the height of the window in pixels, which has been replaced by Innerheight;

Outerwidth: Specifies the external width of the window in pixels;

Outerheight: Specifies the external height of the window in pixels;

Left: Specifies, in pixels, the position of the window from the side of the screen;

Top: Specifies the position of the window from the top of the screen in pixels;

Alwayslowered: The specified window is hidden behind all windows, and the value and meaning of the option is the same as toolbar;

Alwaysraised: Specifies that the window floats above all windows, and the value and meaning of the option is the same as toolbar;

Dependent: Specifies that the open window is a subwindow of the current window, and that the value and meaning of the option are the same as the toolbar when the parent window is closed;

Hotkeys: Set the safe exit hotkey in a new window without the menu bar, the value and meaning of the option is the same as toolbar;

Innerheight: Sets the pixel height of the document in the window;

Innerwidth: Sets the pixel width of the document in the window;

ScreenX: Sets the pixel length of the window from the left edge of the screen;

ScreenY: Sets the pixel length of the window from the upper edge of the screen;

TitleBar: Indicates whether the title bar is visible in a new window, and the value and meaning of the option is the same as toolbar;

Z-look: Indicates that when a window is activated, it cannot float on top of other windows, and the value and meaning of the option are the same as toolbar.

The Open method returns a reference to the window.

Tip: This method is often used to automatically open another window when a Web page is opened.

Example 6-2-1: Develop a small program that automatically opens another window when the current window is opened, to

The window does not have a standard toolbar, address bar, link toolbar, menu bar, but there is a status bar, Windows hit

The address of the Web page opened is: http://www.dlrtvu.edu.cn.

2. The Close method

Syntax format:

Window.close ()

Function: The Close method is used to automatically close the browser window.

3. Alert method

Syntax format:

Window.alert (Hint string)

function: pops up a warning box to display the prompt string text in the warning box.

4. Confirm method

Syntax format:

WINDOW.CONFIRM (Hint string)

Features: Displays a confirmation box that displays a prompt string in the confirmation box when the user clicks the OK button

When this method returns True, False is returned when you click Cancel.

5. Prompt method

Syntax format:

WINDOW.PROMPT (hint string, default text)

Function: Display an input box, display the prompt string in the input box, display the default text in the Input text box

When the user clicks the "OK" button, the user input string is returned when the

When you click the Cancel button, a null value is returned.

6. SetTimeout method

Syntax format:

Window.settimeout (Code character expression, number of milliseconds)

Function: Timing setting, automatically executes the code character expression when the specified number of milliseconds is reached.

7. Cleartimeout Method

Syntax format:

Window.cleartimeout (timer)

Function: Cancels the previous timer setting, where the parameter is the return value when set with SetTimeout.

8. SetInterval method

Syntax format:

Window.setinterval (Code character expression, number of milliseconds)

Function: After setting a time interval (second parameter), repeat the contents of "Code character expression"

9. Clearinterval method

Syntax format:

Window.clearinterval (Time spacer)

Function: Cancels the timing of the setinterval setting. The parameter is the return value of the SetInterval method.

Moveby method

Syntax format:

Window.moveby (Horizontal displacement amount, vertical displacement)

Function: Moves the specified window according to the given pixel parameters. The first parameter is the pixel that the window moves horizontally, and the second

Two parameters are pixels that the window moves vertically.

11.moveTo method

Syntax format:

Window.moveto (x, y)

Function: Moves the window to the specified specified coordinates (x, y).

Resizeby method

Syntax format:

Window.resizeby (horizontal, vertical)

Function: Changes the current window to the specified size (x, y), and expands when the value of x, Y is greater than 0, less than 0 o'clock

To zoom out.

Resizeto method

Syntax format:

Window.resizeto (horizontal width, vertical width)

Function: Changes the current window to an (x, y) size, and x, Y are width and height, respectively.

Scrollby method

Syntax format:

Window.scrollby (Horizontal displacement amount, vertical displacement)

Function: Scrolls the contents of a window by a given amount of displacement. When the parameter is positive, it scrolls forward, otherwise the inverse

To scroll.

Scrollto method

Syntax format:

Window.scrollto (x, y)

Function: Scrolls the contents of the window to the specified position.

16.find method

Syntax format:

Window.find ()

Function: When this method is triggered, a "Find" dialog window pops up and allows the user to

Finds a string in the page that sends the Find method.

Note: This property is not supported in IE5.5 and Netscape6.0.

. Back method

Syntax format:

Window.back ()

Function: Simulates the user to click on the "Back" button on the browser to move the page to the previous page of the browser.

Description: This action can be performed only if the current page has a previous page.

Note: IE5.5 does not support this method, Netscape6.0 support.

Forward method

Syntax format:

Window.forward ()

Function: Simulates the user to click on the "Forward" button on the browser to move the page to the next page of the browser.

Description: This action is available only if the next page exists on the current page.

Note: IE5.5 does not support this method, Netscape6.0 support.

. Home method

Syntax format:

Window.home ()

Function: Simulates the user to click on the "Home" button on the browser to move the page to the specified page.

Note: IE5.5 does not support this method, Netscape6.0 support.

. Stop method

Syntax format:

Window.stop ()

Function: Simulates the user to click the "Stop" button on the browser to terminate the browser's download operation.

Note: IE5.5 does not support this method, Netscape6.0 support.

. Print method

Syntax format:

Window.print ()

Function: Simulate the user click the "Print" button on the browser, notify the browser to open the Print dialog box printing

The current page.

Blur Method

Syntax format:

Window.blur ()

Function: Removes the focus from the window. Care must be taken when combined with the focus method, as it may cause focus

Keep moving in and out.

. Focus Method

Syntax format:

Window.focus ()

Function: Gets the focus in the window. Care must be taken when combined with the Blur method, as it may cause focus not

The break-in-move-out.

Captureevent method

Syntax format:

Window.captureevent (Event)

Window.captureevent (Event 1| Event 2|...| Event N)

Function: Captures all events of the specified parameter. Because of the ability to capture events that are handled by the local program itself

, so programmers can arbitrarily define functions to handle events. If there are multiple events that need to be captured, each event

With the pipe symbol "|" Separated. The types of events that can be captured are as follows:

Event.abort

Event.blur

Event.change

Event.click

Event.dblclick

Event.dragdrop

Event.error

Event.focus

Event.keydown

Event.keypress

Event.keyup

Event.load

Event.mousedown

Event.mousuemove

Event.mouseout

Event.mouseover

Event.mouseup

Event.move

Event.reset

Event.resize

Event.select

Event.submit

Event.unload

Enableexternalcapture Event

Syntax format:

Window.enableexternalcapture (Event)

Function: The Enableexternalcapture method is used to capture external events that pass through parameters.

Disableexternalcapture Events

Syntax format:

Window.disableexternalcapture ()

Function: Cancels the setting of the Enableexternalcapture method, terminating the capture of the external event.

Handleevent Events

Syntax format:

Window.handleevent (Event)

Function: Event handler that triggers the specified event.

Releaseevent Events

Syntax format:

Window.releaseevent (Event)

Window.releaseevent (Event 1| Event 2|...| Event N)

Function: Releases the captured events passed through the parameters, which are

The Window.captureevent method is set, and the event that can be disposed is the same as captureevent.

Routeevent Events

Syntax format:

Window.releaseevent (Event)

Function: Transfer all events of the captured type to the standard event processing method, which can be transferred

Same as Captureevent.

The Scroll Event

Syntax format:

Window.Scroll (x-coordinate, y-coordinate)

Function: Moves the window to the specified coordinate position.

6-2-2 properties of the Window object

The Window object has the following properties:

Status

StatusBar

Statusbar.visible

Defaultstatus

Location

Locationbar

Locationbar.visible

Self

Name

Closed

Frames

Frames.length

Length

Document

History

Innerheight

Innerwidth

MenuBar

Menubar.visible

Opener

Outerheight

Outerwidth

Pagexoffset

pageYOffset

Parent

Personalbar

Personalbar.visible

ScrollBar

Scrollbar.visible

Toolbar

Toolbar.visible

Top

1. Status Property

Syntax format:

window.status= string

Function: Sets or gives the current display information for the status bar in the browser window.

Tip: You can use this property to set the browser window status bar information.

2. StatusBar Properties

Syntax format:

Window.statusbar. Properties

Function: The StatusBar property itself is also an object that accesses its own visible property to ensure

The status bar is visible.

Note: This property is not supported by the IE5.5 browser.

3. Statusbar.visible Properties

Syntax format:

Window.statusbar.visible

Function: Checks whether the status bar is visible, returns True if it is visible, and returns false instead.

Note: This property is not supported by the IE5.5 browser.

4. Defaultstatus Properties

Syntax format:

window.defaultstatus[= string]

Function: The Defaultstatus property value is the default display information for the status bar in the browser window.

5.location Properties

Syntax format:

Window.location=url

Function: gives the URL information of the current window or specifies the URL of the open window.

6. Locationbar Properties

Syntax format:

Window.locationbar. Properties

Function: The Locationbar property can also be considered a sub-object, which is used to obtain its own

The Visible property to determine whether the position bar is visible.

So far, this property has only one child property: visible.

Note: IE5.5 does not support this property.

7. Locationbar.visible Properties

Syntax format:

Window.locationbar.visible

Function: Returns whether the position bar is visible, returns True if it is visible, and returns false instead.

Note: IE5.5 does not support this property.

8. Self Property

Syntax format:

Window.self. Methods

Window.self. Properties

Features: This property contains the current window's flags, which can be used to ensure that multiple windows are opened

, the function or property within the current window is called correctly without confusion.

9. Name property

Syntax format:

Window.name= Name

Function: Returns the name of the window that is given when the new window is created by the window.open () method.

In the javascript1.0 version, this property can only be used to read the window name, and the

javascript1.1 version, you can use this property for a window.open () method that is not created with the

window to specify a name.

Closed properties

Syntax format:

Window.closed

Function: The Closed property returns True if the instance of the specified window is closed, if it is closed

, instead of returning flase.

One. Frames Properties

Syntax format:

window.frames["frame name"]

window.frames[value]

Function: The Frames property is an array that stores every child window created by an element in a document (box

Can be either a secondary ordinal or a name specified with the Name property of the frame element.

Called to get and use.

Frames.length Properties

Syntax format:

Window.frames.length

Function: The Frames.length property is used to give the number of instances of a child window (frame) in a document.

Length Property

Syntax format:

Window.length

Function: The Length property returns the number of child windows within a window that is associated with the

The value of the Window.frame.length property is the same.

. Document Property

Syntax format:

Window.document. Events

Window.document. Methods

Window.document. Properties

Function: The child object of the Window object document is the core object of JavaScript and is encountered in the script

The BODY element when an instance is created.

. History properties

Syntax format:

window.history[value]

Window.history. Method ()

Window.history. Properties

The child object of the Window object history is one of the core objects of JavaScript, and this property contains a

An array of the names and URLs of the pages that have been visited.

Innerheight Properties

Syntax format:

window.innerheight= value

Function: Returns or specifies the pixel height of the document in the browser window, this height does not include any toolbars and

The page decoration height that makes up the window.

Note: IE5.5 does not support this property.

Innerwidth Properties

Syntax format:

window.innerheight= value

Function: Returns or specifies the pixel width of the document in the browser window, which does not include any toolbars and

The page decoration width that makes up the window.

Note: IE5.5 does not support this property.

MenuBar Properties

Syntax format:

Window.menubar. Properties

Function: The MenuBar property can also be considered a sub-object, which is used to obtain its own

The Visible property to determine whether the menu bar is visible.

So far, this property has only one child property: visible.

Note: IE5.5 does not support this property.

. menubar.visible Properties

Syntax format:

Window.menubar.visible

Function: The Menubar.visible property is used to return whether the menu bar is visible, if visible returns True, the inverse

It returns false.

Note: IE5.5 does not support this property.

Opener Properties

Syntax format:

Window.opener

Window.opener. Methods

Window.opener. Properties

Function: The opener property is associated with the parent window that opens the window when the Operer property is accessed in the child window

, the parent window is returned. This property allows you to use methods and properties in the parent window object.

. Outerheight Properties

Syntax format:

Window.outerheight

Function: The Outerheight property is used to access the pixel height of the browser window, which includes toolbars and

The height of the decorative edge.

Note: IE5.5 does not support this property.

Outerwidth Properties

Syntax format:

Window.outerwidth

Function: The Outerwidth property is used to access the pixel width of the browser window, which includes the toolbar and

The width of the trim.

Note: IE5.5 does not support this property.

. Pagexoffset Properties

Syntax format:

window.pagexoffset= value

Function: Specifies the current horizontal pixel position of the upper-left corner of the file in the window in the browser window. In the use

This property can be used to determine whether a window needs to be moved before MoveTo moves. Because this property returns the

Shows the current position of the document relative to the entire page.

Note: IE5.5 does not support this property.

pageYOffset Properties

Syntax format:

window.pageyoffset= value

Function: Specifies the current vertical pixel position of the upper-left corner of the file in the window in the browser window. In the use

This property can be used to determine whether a window needs to be moved before MoveTo moves. Because this property returns the

Shows the current position of the document relative to the entire page.

Note: IE5.5 does not support this property.

. Parent Property

Syntax format:

window.parent.frames[value]

Window.parent.framesName

Function: Access the parent window where each child window (multi-frame) resides.

Personalbar Properties

Syntax format:

Window.personalbar. Properties

Function: The Personalbar property itself is also an object that accesses its own visible property to

Determine if the personal column is visible.

Note: IE5.5 does not support this property.

Personalbar.visible Properties

Syntax format:

Window.personalbar.visible

Function: Determines whether the personal bar is visible, returns True if it is visible, and returns false instead.

Note: IE5.5 does not support this property.

ScrollBars Properties

Syntax format:

Window.scrollbars. Properties

Function: The ScrollBars property itself is also an object that accesses its own visible property to

The scroll bar is visible.

Note: IE5.5 does not support this property.

. scrollbars.visible Properties

Syntax format:

Window.scrollbars.visible

Function: Scrollbars.visible is used to determine if the scroll bar is visible and returns true if it is visible, anti-

It returns false.

Note: IE5.5 does not support this property.

. Toolbar properties

Syntax format:

Window.toolbar. Properties

Function: The toolbar property itself is also an object that accesses its own visible property to determine

Whether the toolbar is visible.

Note: IE5.5 does not support this property.

Toolbar.visible Properties

Syntax format:

Window.toolbar.visible

Function: The Toolbar.visible property is used to check if the toolbar is visible and returns true if it is visible.

Conversely, returns false.

Note: IE5.5 does not support this property.

Top Properties

Syntax format:

window.top.frames[value]

Window.top.frameName

Window.top. Method ()

Window.top. Properties

Function: The top property of the Window object is used to contain information about the topmost window of all the child windows (multiple frames) that are loaded into the browser.

The complete analysis of JS window event