Web Reference: A simple way would be to split the string on the required word, the word for which we want to calculate the number of occurences, and subtract 1 from the number of parts: Jul 11, 2025 · The match () method is a simple and effective way to count occurrences using a regular expression. It returns an array of all matches, and the length of the array gives the count. May 19, 2009 · Use a regular expression literal if you know what you are searching for beforehand, if not you can use the RegExp constructor, and pass in the g flag as an argument. The original answer I made in 2009 is below. It creates an array unnecessarily, but using a split is faster (as of September 2014).
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