April 23, 2000 - window.open vs. document.open
April 23, 2000|
window.open vs. document.open
Tips: April 2000
Yehuda Shiran, Ph.D.
open()method is that it is almost always invoked as
window.open(), even though window refers to the global object and should therefore be entirely optional. Since the
documentobject also has an
open()method, specifying the
windowobject when we want to open a new window is essential for clarity. In event handlers, you must specify
window.open()instead of simply using
open()without specifying an object name is equivalent to
document.open(). When the event handler of an HTML button executes, for example, the scope chain includes the
Documentobject, and finally, the
Windowobject that contains the document. Thus, if such an event handler refers to the
open()method, this identifier ends up being resolved in the
Documentobject, and the event handler opens a new document instead of opening a new window.
Learn more about the open method in Tutorial 1, Working with Windows.