The JavaScript TRIM function is a String function used to remove the empty spaces from both the Right-hand side and Left-hand side of a string. The syntax of the string Trim function in JavaScript Programming Language is
String_Object.trim()
JavaScript TRIM Function Example
The following set of examples will help you understand how to use a string trim function to trim extra spaces.
<!DOCTYPE html> <html> <head> <title> TRIM JavaScript </title> </head> <body> <h1> JavaScript TRIM </h1> <script> var Str1 = " Tutorial Gateway "; var Str2 = Str1.trim(); var Str3 = " Tutorial Gateway".trim(); var Str4 = "Tutorial Gateway ".trim(); var Str5 = " \t Tutorial Gateway \n ".trim(); document.write(Str2 + "<br \>"); document.write(Str3 + "<br \>"); document.write(Str4 + "<br \>"); document.write(Str5 + "<br \>"); </script> </body> </html>
First we declared the String variable Str1 and assigned corresponding value using following statement
var Str1 = " Tutorial Gateway ";
It removes the white spaces from both the Left & Right side of String variable Str1 using the trim function
var Str2 = Str1.trim();
Trimming only left-hand side of a string using JavaScript Trim function. It removes white spaces from the left-hand side
var Str3 = " Tutorial Gateway".trim();
Trimming the Right-hand side of string using the Trim String Function. The following statement removes white spaces from the right-hand side
var Str4 = "Tutorial Gateway ".trim();
Next, we used the line terminator along with string objects. If you observe the above screenshot, Trim function is trimming the terminators like \t and \n
var Str5 = " \t Tutorial Gateway \n ".trim();