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String toUpperCase() Method with Example in JavaScript
JavaScript String toUpperCase() Method: Here, we are going to learn about the toUpperCase() method of the string in JavaScript with Example.
Submitted by IncludeHelp, on February 05, 2019
String toUpperCase() Method
toUpperCase() Method is a string method in JavaScript, it is used to converts all alphabets in uppercase and returns the new string with uppercase alphabets.
Syntax
new_string = str.toUpperCase();
Parameters
- str is the main string to be converted.
- new_string is the returned new string with all alphabets in uppercase.
Sample Input/Output
Input: "Hello World!"
Output: "HELLO WORLD!"
Input: "Hello123@"
Output: "HELLO123@"
Example
<html>
<head>
<title>JavaScipt Example</title>
</head>
<body>
<script>
var main_str = "Hello World!";
var new_str = main_str.toUpperCase();
document.write("main_str = " + main_str + "<br>");
document.write("new_str = " + new_str + "<br>");
main_str = "Hello123@";
new_str = main_str.toUpperCase();
document.write("main_str = " + main_str + "<br>");
document.write("new_str = " + new_str + "<br>");
</script>
</body>
</html>
Output
main_str = Hello World!
new_str = HELLO WORLD!
main_str = Hello123@
new_str = HELLO123@
JavaScript String Object Methods »
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