JavaScript Alert Dialog Box

JS Alert dialog box:

An alert dialog box is used to give a warning message to the users. It pops up a message box dispalaying some contents with a OK button. JavaScript alerts are used in the following situations:

• to see a message before doing anything on the website.
• to warn the user abut something.
• It can be used as an error indication.
• To confirm some action.

Example :

Try This

Result:

Read Also:

• Prompt Dialog box
• Confirmation Dialog box