How to match a set of characters (letter + any single character from set + letter) using RegEx in Node.js

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// b[aeou]y: This pattern looks for strings that match the following:
// b: The letter "b".
// [aeou]: Any single character that is either "a", "e", "o", or "u".
// y: The letter "y".

function checkPattern(pattern, text) {
    const re = new RegExp(pattern, 'i');
    
    return re.test(text);
}

const pattern = "b[aeou]y";

console.log(checkPattern(pattern, "A smart boy")); // b o y
console.log(checkPattern(pattern, "I want to buy this laptop")); // b u y
console.log(checkPattern(pattern, "baay"));
console.log(checkPattern(pattern, "baeouy"));
console.log(checkPattern(pattern, "baey"));
console.log(checkPattern(pattern, "This is beauty"));
console.log(checkPattern(pattern, "A programming algorithm book"));



   
/*
run:
   
true
true
false
false
false
false
false
  
*/

 



answered Feb 25, 2025 by avibootz
edited Feb 25, 2025 by avibootz
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