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JavaScript: Remove non-printable ASCII chars

JavaScript String: Exercise-32 with Solution

Write a JavaScript function to remove non-printable ASCII chars.

Test Data:
console.log(remove_non_ascii('äÄçÇéÉêPHP-MySQLöÖÐþúÚ'));
"PHP-MySQL"

Sample Solution:-

HTML Code:

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

</body>
</html>

JavaScript Code:

function remove_non_ascii(str) {
  
  if ((str===null) || (str===''))
       return false;
 else
   str = str.toString();
  
  return str.replace(/[^\x20-\x7E]/g, '');
}

console.log(remove_non_ascii('äÄçÇéÉêPHP-MySQLöÖÐþúÚ'));

Sample Output:

PHP-MySQL

Flowchart:

Flowchart: JavaScript- Remove non-printable ASCII chars

Live Demo:

See the Pen JavaScript Remove non-printable ASCII chars - string-ex-32 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript function to remove non-word characters.

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JavaScript: Tips of the Day

Tagged template literals

function getPersonInfo(one, two, three) {
  console.log(one);
  console.log(two);
  console.log(three);
}

const person = 'Lydia';
const age = 21;

getPersonInfo`${person} is ${age} years old`;

If you use tagged template literals, the value of the first argument is always an array of the string values. The remaining arguments get the values of the passed expressions!

Ref: https://bit.ly/323Y0P6