JavaScript toUpperCase() Method : String Object
Description
The toUpperCase() method is used to convert a string to uppercase.
Version
Implemented in JavaScript 1.0
Syntax
toUpperCase()
Parameter
None
Example:
In the following web document toUpperCase() method converts a given string to uppercase.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>JavaScript String object - toUpperCase() method example</title>
</head>
<body>
<h1 style="color: red">JavaScript String object : toUpperCase() method</h1>
<hr />
<script type="text/javascript">
//This is done to make the following JavaScript code compatible to XHTML. <![CDATA[
var lwtxt="alphabet"
document.write(lwtxt.toUpperCase())
//]]>
</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 |
See also:
JavaScript Core objects, methods, properties.
Previous: JavaScript toString() Method: String Object
Next:
JavaScript valueOf() Method: String Object
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
Creates an object composed of the properties the given function returns truthy for. The function is invoked with two arguments: (value, key)
Example:
const tips_composed = (obj, fn) => Object.keys(obj) .filter(k => fn(obj[k], k)) .reduce((acc, key) => ((acc[key] = obj[key]), acc), {}); console.log(tips_composed({ p: 2, q: '4', r: 6 }, x => typeof x === 'number'));
Output:
[object Object] { p: 2, r: 6 }
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises