JavaScript: Alternet of trim function using regular expression

JavaScript validation with regular expression: Exercise-5 with Solution

Regex Trim Function

Write a JavaScript program that works as a regular expression trim function (string).

Visual Presentation:

Sample Solution:

JavaScript Code:

function Trim(str)
{
  var result;
  if (typeof str === 'string') 
  {
    result = str.replace(/^\s+|\s+$/g, '');
    return result;
  }
  else
  {
    return false;
  }
}
console.log(Trim(' w3resource '));

Output:

w3resource

Flowchart:

Live Demo:

See the Pen javascript-regexp-exercise-5 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that removes leading and trailing whitespace from a string using a regular expression.
• Write a JavaScript function that implements a custom trim() method using regex replace and tests it on various strings.
• Write a JavaScript function that trims not only spaces but also tab characters and newlines from both ends of a string.
• Write a JavaScript function that mimics the behavior of String.prototype.trim() without using any built-in trim methods.

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