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JavaScript TRIM

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The JavaScript TRIM function is one of the JavaScript String function which is used to remove the empty spaces from both Right hand side and Left hand side of a string.

In this article we will show you, How to write string Trim Function in JavaScript Programming Language with example. The basic syntax of the string Trim function in JavaScript Programming Language is as shown below:

String_Object.trim()
  • String_Object: Please specify the valid string to perform trimming.

JavaScript TRIM Function Example

The following set of examples will help you understand, how to use 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>

OUTPUT

JavaScript TRIM Function

ANALYSIS

First we declared the String variable Str1 and assigned corresponding value using following statement

var Str1 = "    Tutorial Gateway     ";

Following statement will remove the white spaces from both the Left & Right side of String variable Str1 using trim() function

var Str2 = Str1.trim();

Trimming only left hand side of a string using JavaScript Trim() function. Following statement will remove white spaces from left hand side

var Str3 = "    Tutorial Gateway".trim();

Trimming only Right hand side of string using Trim() function. Following statement will remove white spaces from right hand side

var Str4 = "Tutorial Gateway     ".trim();

Next, We used the line terminator along with string object. If you observe the above screenshot, Trim() function is trimming the terminators like \t and \n

var Str5 = " \t   Tutorial Gateway    \n ".trim();