The trim() method in JavaScript is used to remove whitespace characters from both ends of a string. The whitespace characters that are removed include spaces, tabs, and newlines. The method returns the modified string without changing the original string.
str.trim()
const str = " Hello, World! ";
console.log(str.trim()); // Output: "Hello, World!"
"Hello, World!"
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>JavaScript Output</title>
</head>
<body>
<!-- Your JavaScript code goes here -->
<script>
const str = " Hello, World! ";
const trimmedStr = str.trim();
document.write('<p>' + trimmedStr + '</p>');
</script>
</body>
</html>
The trim() method removes the whitespace characters from both ends of the string " Hello, World! " and returns the new string "Hello, World!".
The trim() method is useful when dealing with user input, where they may accidentally add extra spaces at the beginning or end of their input. It can also be used to remove unwanted whitespace characters from the beginning or end of a string that is retrieved from a data source.
trim() method doesn't modify the original string, it only returns a new modified string.trim() method removes only leading and trailing whitespace characters, not any whitespace characters in between the string.trim() method is not supported in Internet Explorer 8 and earlier versions.The trim() method in JavaScript is a useful string method to remove whitespace characters from both ends of a string. It helps to simplify string manipulation tasks and improve the quality of user input.