JavaScript Basics
JS Home
JS Syntax
JS Placements
JS Output
JS Statements
JS Keywords
JS Comments
JS Variables
JS var
JS let
JS const
JS var Vs let Vs const
JS Operators
JS Arithmetic Operators
JS Assignment Operators
JS Comparison Operators
JS Logical Operators
JS Bitwise Operators
JS Ternary Operator
JS Operator Precedence
JS Data Types
JS typeof
JS Conditional Statements
JS Conditional Statement
JS if Statement
JS if...else Statement
JS switch Statement
JS Loops
JS for Loop
JS while Loop
JS do...while Loop
JS break Statement
JS continue Statement
JS break Vs. continue
JavaScript Popup Boxes
JS Dialog Box
JS alert Box
JS confirm Box
JS prompt Box
JavaScript Functions
JS Functions
JS setTimeout() Method
JS setInterval() Method
JavaScript Events
JS Events
JS onclick Event
JS onload Event
JS Mouse Events
JS onreset Event
JS onsubmit Event
JavaScript Arrays
JS Array
JS Find Length of Array
JS Add Elements at Beginning
JS Add Element at End
JS Remove First Element
JS Remove Last Element
JS Get First Index
JS Get Last Index
JS Reverse an Array
JS Sort an Array
JS Concatenate Arrays
JS join()
JS toString()
JS from()
JS Check if Value Exists
JS Check if Array
JS Slice an Array
JS splice()
JS find()
JS findIndex()
JS entries()
JS every()
JS fill()
JS filter()
JS forEach()
JS map()
JavaScript Strings
JS String
JS Length of String
JS Convert to Lowercase
JS Convert to Uppercase
JS String Concatenation
JS search()
JS indexOf()
JS search() Vs. indexOf()
JS match()
JS match() Vs. search()
JS replace()
JS toString()
JS String()
JS includes()
JS substr()
JS Slice String
JS charAt()
JS repeat()
JS split()
JS charCodeAt()
JS fromCharCode()
JS startsWith()
JS endsWith()
JS trim()
JS lastIndexOf()
JavaScript Objects
JS Objects
JS Boolean Object
JavaScript Math/Number
JS Math Object
JS Math.abs()
JS Math.max()
JS Math.min()
JS Math.pow()
JS Math.sqrt()
JS Math.cbrt()
JS Math.round()
JS Math.ceil()
JS Math.floor()
JS Math.trunc
JS toFixed()
JS toPrecision()
JS Math.random()
JS Math.sign()
JS Number.isInteger()
JS NaN
JS Number()
JS parseInt()
JS parseFloat()
JavaScript Date and Time
JS Date and Time
JS Date()
JS getFullYear()
JS getMonth()
JS getDate()
JS getDay()
JS getHours()
JS getMinutes()
JS getSeconds()
JS getMilliseconds()
JS getTime()
JS getUTCFullYear()
JS getUTCMonth()
JS getUTCDate()
JS getUTCDay()
JS getUTCHours()
JS getUTCMinutes()
JS getUTCSeconds()
JS getUTCMilliseconds()
JS toDateString()
JS toLocaleDateString()
JS toLocaleTimeString()
JS toLocaleString()
JS toUTCString()
JS getTimezoneOffset()
JS toISOString()
JavaScript Browser Objects
JS Browser Objects
JS Window Object
JS Navigator Object
JS History Object
JS Screen Object
JS Location Object
JavaScript Document Object
JS Document Object Collection
JS Document Object Properties
JS Document Object Methods
JS Document Object with Forms
JavaScript DOM
JS DOM
JS DOM Nodes
JS DOM Levels
JS DOM Interfaces
JavaScript Cookies
JS Cookies
JS Create/Delete Cookies
JavaScript Regular Expression
JS Regular Expression
JS RegEx .
JS RegEx \w and \W
JS RegEx \d and \D
JS RegEx \s and \S
JS RegEx \b and \B
JS RegEx \0
JS RegEx \n
JS RegEx \xxx
JS RegEx \xdd
JS RegEx Quantifiers
JS RegEx test()
JS RegEx lastIndex
JS RegEx source
JavaScript Advance
JS Page Redirection
JS Form Validation
JS Validations
JS Error Handling
JS Exception Handling
JS try-catch throw finally
JS onerror Event
JS Multimedia
JS Animation
JS Image Map
JS Debugging
JS Browser Detection
JS Security
JavaScript Misc
JS innerHTML
JS getElementById()
JS getElementsByClassName()
JS getElementsByName()
JS getElementsByTagName()
JS querySelector()
JS querySelectorAll()
JS document.write()
JS console.log()
JS instanceof
JavaScript Programs
JavaScript Programs

JavaScript toUpperCase() | Convert a String to Uppercase

The JavaScript toUpperCase() method converts specified string to uppercase. For example:

HTML with JavaScript Code

<!DOCTYPE html>
<html>
<body>

   <p id="xyz"></p>

   <script>
      let myString = "JavaScript is Fun. Is not it?";

      let myUpperString = myString.toUpperCase();
      document.getElementById("xyz").innerHTML = myUpperString;
   </script>
   
</body>
</html>

Output

That is, all the lowercase characters of specified string will be converted into its uppercase equivalent.

JavaScript toUpperCase() Syntax

The syntax of toUpperCase() method in JavaScript is:

string.toUpperCase()

The toUpperCase() method does not change the original string. Rather it returns a new string which is the exact copy of the original string, except that, all characters will be in uppercase.

JavaScript Online Test

« Previous Tutorial Next Tutorial »