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Number of times a string appears in another JavaScript
We are required to write a JavaScript function that takes in two strings and returns the count of the number of times the str1 appears in the str2.
Example
The code for this will be −
const main = 'This is the is main is string'; const sub = 'is'; const countAppearances = (main, sub) => { const regex = new RegExp(sub, "g"); let count = 0; main.replace(regex, (a, b) => { count++; }); return count; }; console.log(countAppearances(main, sub));
Output
The output in the console −
4
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