1. Document.write
Total body content is called document of the web page this
function will print variable or statement or array value in web page
Syntax: document.write(“statements”);
Syntax: document.write(“veriables”);
When printing any statement we can also apply html tags but
tags must enclose with in codes
<html>
<head>
<script
language="javascript">
var a=10; document.writeln("InternalScripting");
</script>
</head>
<body>
</body>
</html>
2. Alert
It will print a statement or a variable with in a popup it
has only ok option until user accepted
It will not allow loading web page
Syntax: alert(“statement”);
<html>
<head>
<script
language="javascript">
var a=10;
alert("statements");
</script>
</head>
<body>
</body>
</html>
3. Conform
It is also similar to alert box it will take conformation
for the user
Syntax: conform(“statement”);
<html>
<head>
<script
language="javascript">
var a=10;
confirm("Do
you want to Submit Form?");
</script>
</head>
<body>
</body>
</html>
4. Prompt
It is also similar to alert or conform but it will take
input from the user (it returns input always in string format)
<html>
<head>
<script
language="javascript">
var a=10;
prompt("Please
enter your age");
</script>
</head>
<body>
</body>
</html>
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