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JavaScript toUpperCase() Method

String Object Reference JavaScript String Object

Definition and Usage

The toUpperCase() method converts a string to uppercase letters.

Syntax

stringObject.toUpperCase()

Example

Example

Convert a string to uppercase letters:

<script type="text/javascript">

var str="Hello world!";
document.write(str.toUpperCase());

</script>

Try it yourself »

String Object Reference JavaScript String Object

From http://www.w3schools.com (Copyright Refsnes Data)