regex tester code example

Example 1: javascript regex .test

const str = 'hello world!';
const result = /^hello/.test(str);

console.log(result); // true

/**
The test() method executes a search for a match between 
a regular expression and a specified string
*/

Example 2: python regex tester

Find below are online regex tester

https://regex101.com/
https://pythex.org/
http://www.pyregex.com/
https://www.debuggex.com/
  
Here you insert your regular expression and get the test result.
Thank you !!!

Example 3: online regex builder

it do it's job greate in my opinion, don't waste your time on others
https://regex101.com/

Example 4: regex tester

One of my favorite regex testers:
https://regex101.com/

Example 5: regex tester

/[a-z]//[0-9]//[a-z]/ /s//[0-9]/ /[a-z]/ /[0-9]/