JavaScript Trim a String
To trim whitespaces from both the ends of a string in JavaScript, call trim() method on this string.
Syntax
The syntax to call trim() method on this string str
is
str.trim()
trim() returns a new string with whitespaces trimmed from the original string.
Examples
In the following example, we take a string str
and trim the whitespaces at start and end of the string using trim().
index.html
<!DOCTYPE html> <html lang="en"> <body> <pre id="output"></pre> <script> var str = ' hello world '; var result = str.trim(); var output = ''; output += 'Original String : "' + str + '"'; output += '\n\nTrimmed String : "' + result + '"'; document.getElementById('output').innerHTML = output; </script> </body> </html>
Conclusion
In this JavaScript Tutorial, we learned how to trim whitespaces from the edges of a string in JavaScript, using trim() method, with examples.