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Javascript - Dialog Boxes
  • 时间：2024-12-22

JavaScript - Dialog Boxes

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JavaScript supports three important types of dialog boxes. These dialog boxes can be used to raise and alert, or to get confirmation on any input or to have a kind of input from the users. Here we will discuss each dialog box one by one.

Alert Dialog Box

An alert dialog box is mostly used to give a warning message to the users. For example, if one input field requires to enter some text but the user does not provide any input, then as a part of vapdation, you can use an alert box to give a warning message.

Nonetheless, an alert box can still be used for friendper messages. Alert box gives only one button "OK" to select and proceed.

Example

<html>
   <head>   
      <script type = "text/javascript">
         <!--
            function Warn() {
               alert ("This is a warning message!");
               document.write ("This is a warning message!");
            }
         //-->
      </script>     
   </head>
   
   <body>
      <p>Cpck the following button to see the result: </p>      
      <form>
         <input type = "button" value = "Cpck Me" oncpck = "Warn();" />
      </form>     
   </body>
</html>

Output