JavaScript: Remove non-word characters

Last update on May 30 2022 10:02:21 (UTC/GMT +8 hours)

JavaScript String : Exercise-33 with Solution

Write a JavaScript function to remove non-word characters.

Test Data :
console.log(remove_non_word('PHP [email protected]#$%^&*()+`-={}[]|\\:";\'/?><., MySQL'));
"PHP - MySQL"

Pictorial Presentation:

Sample Solution:-

HTML Code :

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to remove non-word characters.</title>
</head>
<body>

</body>
</html>

JavaScript Code :

function remove_non_word (str) {
    if ((str===null) || (str===''))
       return false;
 else
   str = str.toString();
  
var PATTERN = /[^\x20\x2D0-9A-Z\x5Fa-z\xC0-\xD6\xD8-\xF6\xF8-\xFF]/g;
  
  return str.replace(PATTERN, '');
}
console.log(remove_non_word('PHP [email protected]#$%^&*()+`-={}[]|\\:";\'/?><., MySQL'));

Sample Output:

PHP - MySQL

Flowchart :

Live Demo :

See the Pen JavaScript Remove non-word characters-string-ex-33 by w3resource (@w3resource) on CodePen.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04