Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Use of exec() Regex Method in JavaScript
exec()
The exec() method is a regex method. It searches a string for a specified pattern and, unlike test() regex method, returns the found text as an object. If there are no matches it will give null as an output. Let's discuss it in detail.
Example-1
In the following example, a variable pattern "est" is checked through the exec() method. The exec() regex method, after scrutinizing the given pattern throughout the text, returned the pattern as an object.
<html>
<body>
<script>
var obj = /est/.exec("Tutorix is the best e-learning platform");
document.write(
"The object is " + obj[0] + " and its position is " + obj.index);
</script>
</body>
</html>
Output
The object is est and its position is 16
Example-2
In the following example, a variable pattern "x" is checked through the exec() method. The exec() regex method, after scrutinizing the given pattern throughout the text, returned the pattern as an object.
<html>
<body>
<script>
var obj = /x/.exec("Tutorix is the best e-learning platform");
document.write(
"The object is " + obj[0] + " and its position is " + obj.index);
</script>
</body>
</html>
Output
The object is x and its position is 6
Updated on: 2019-07-30T22:30:26+05:30
100 Views
Advertisements