I am looking for the number of occurences of two different patterns in a string. I am looking for fly or flies. I am able to find the occurrence of one, but not sure how to check for 2 different strings.
My attempt so far is
const flyCount = str => {
return (str.match(/fly/g) || str.match(/flies/g) || []).length;
}
Note: use \b (word boundary) to find exact words. If the words can be a part of other words, remove the \b.
const flyCount = str =>
(str.match(/\b(?:fly|flies)\b/g) || []).length;
const result = flyCount('Look how he flies. He can fly');
console.log(result);const flyCount = str =>
(str.match(/\bfly\b/g) || []).length + (str.match(/\bflies\b/g) || []).length;
const result = flyCount('Look how he flies. He can fly');
console.log(result);
return str.match(/fly|flies/g).length; be easier?
This can be done with the | regex operator. You may also want to consider adding the \b word boundary.
const flyCount = str => (str.match(/\b(?:fly|flies)\b/g) || []).length
console.log(flyCount('One fly, two flies'))