JavaScript alert - prompt - confirm Dialog Boxes
JavaScript alert - Dialog box
Description
alert() is a simple function to display a message to a dialog box (also called alert box). Here is a simple example to display a text in the alert box.
HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8>
<title>Javascript alert box example-1</title>
</head>
<body>
<h1 style="color: red">JavaScript alert() box example</h1>
<hr />
<script type="text/javascript">
alert("This is a alert box");
</script>
</body>
</html>
View the example in the browser
Let's puts some variables in the alert box.
HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8>
<title>JavaScript alert box example-2</title>
</head>
<body>
<h1 style="color: red">JavaScript alert() box example</h1>
<hr />
<script type="text/javascript">
mess1='Highest marks in Mathematics : ';
math=99;
alert(mess1+math);
</script>
</body>
</html>
View the example in the browser
JavaScript prompt - Dialog box
Description
The alert() method can not interact with the visitor. To interact with the user we use prompt(), which asks the visitor to input some information and stores the information in a variable.
See the following web document.
HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8>
<title>JavaScript prompt() example-2</title>
</head>
<body>
<script type="text/javascript">
visiter_name = prompt("Input your name : ")
if(visiter_name != null && visiter_name != "")
alert("Your Name is : "+visiter_name);
else
alert("Blank name ...!")
</script>
</body>
</html>
View the example in the browser
JavaScript confirm - Dialog box
Description
Confirm() displays a dialog box with two buttons, OK and Cancel and a text as a parameter. If the user clicks on OK button, confirm() returns true and on clicking Cancel button, confirm() returns false.
See the following web document.
HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8>
<title>JavaScript confirm box example </title>
</head>
<body>
<h1 style="color: red">JavaScript confirm() box example</h1>
<hr />
<script type="text/javascript">
mess1='Press Ok to Continue.';
math=99;
x = confirm(mess1);
if (x == true)
{
alert("You have clicked on Ok Button.");
}
else
{
alert("You have clicked on Cancel Button."); }
</script>
</body>
</html>
View the example in the browser
Supported Browser
| Internet Explorer 7 | Firefox 3.6 | Google Chrome 7 | Safari 5.0.1 | Opera 10 |
| Yes | Yes | Yes | Yes | Yes |
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