Write about window object in Java Script
https://www.computersprofessor.com/2019/05/write-about-window-object-in-java-script.html
window object
Window object: The window object represents a window in
browser. An object of window is created automatically by the browser.the
window object is top level object in client side java script, represent a
window or a frame. Since window object is a top level object, it contains other
objects like document, history ect,.
Syntax: to open a new window ,use the following
syntax:
[window var=[window.]open(“url”,”window name “
,[window features])
Where window var is a name that you create for a
new window.
Window features are height,
width,location,resizable,menubar,scroll bar, status bar,and tool bar.
Window object properties:
PROPERTY
|
DESCRPTION
|
EXAMPLE
|
Closed
|
Returns true if window is closed
|
myWindow.closed
|
Status
|
It is used to get the current status of the
browser window
|
mywindow.status
|
Default status
|
It is used to declare the default status of the
browser window
|
mywindow.defaultStatus = "This is the
default text in the status bar!!"
|
Name
|
It is used to find the name of the browser
window
|
myWindow.name
|
Length
|
It returns integer defining the number of
frames in the page
|
var x =
mywindow.length;
|
Locations
|
It returns the full URL path of the document
used as a string
|
Mywindow.location;
|
Parent
|
It is used to identify the parent window object
|
mywindow.parent
|
Self
|
It is returns instance of the current window
|
mywindow.self
|
Top
|
It is used to get the top most browser window
in a series of nested windows
|
mywindow.top
|
Window object functions:
Method
|
Description
|
Example
|
Alert ()
|
Method alert (“string”) is used to popup an
alert message
|
Alert (“hai”)
|
Confirm ()
|
Method confirm (“string”) is used to display
confirm dialogue box
|
X = confirm (“if you do hard work”)
|
Prompt box ()
|
Method prompt (“string”) is used to get user
input
|
Var name = prompt (“enter user name”, “sri”)
|
Open ()
|
Method open (URL, Name) is used to open a new
window using java script
|
Window.open(“ “, “Mywindow “, width = 200,
height = 100”);
|
Close ()
|
It is used to close a window
|
Mywindow.close();
|
Scroll (x,y)
|
It is used to move a window to a new position
|
Window.scrollTo (300,500);
|
Blur()
|
It is used to remove the focus from the window
|
Mywindow.blur ();
|
Focus
|
It is used to bring a window in focus
|
Mywindow.focus();
|
Set time out()
|
It is used to excute an expression or function
after a time interval
|
Myvar=SetTimeOut(function(),3000);
|
ClearTimeOut()
|
It is used to clear time out set using the
above method
|
clearTimeOut(myvar);
|