JavaScript Examples Bible - UserWorks Technologies

Methods
alert(“message”)
Chapter 2 ✦ Window and Frame Objects (Chapter 16)
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Example
The parameter for the example in Listing 16-20 is a concatenated string. It joins
together two fixed strings and the value of the browser’s navigator.appName property.
Loading this document causes the alert dialog box to appear, as shown in several
configurations in Figure 2-5. The JavaScript Alert: line cannot be deleted from
the dialog box in earlier browsers, nor can the title bar be changed in later browsers.
Listing 16-20: Displaying an Alert Dialog Box
window.alert() Method
alert(“You are running the “ + navigator.appName + “ browser.”)
Figure 2-5: Results of the alert() method in Listing 16-20
in Internet Explorer 5 (top) and Navigator 6 (bottom)
for Windows 98
153
windowObject.alert()