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JavaScript: Alternet of trim function using regular expression

JavaScript validation with regular expression: Exercise-5 with Solution

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

Pictorial Presentation:

JavaScript: Alternet of trim function using regular expression

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Trim function using regular expression</title>
</head>
<body>
</body>
</html>

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 '));

Sample Output:

w3resource

Flowchart:

Flowchart: JavaScript- Alternet of trim function( ) using regular expression

Live Demo:

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


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Next:Write a JavaScript program to count number of words in string.

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JavaScript: Tips of the Day

Assigns default values for all properties in an object that are undefined

Example:

const tips_defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
console.log(tips_defaults({ p: 1 }, { q: 2 }, { q: 6 }, { p: 3 })); 

Output:

[object Object] {
  p: 1,
  q: 2
}