Sometimes, we want to find all indexes of a specified character within a string with JavaScript.
In this article, we’ll look at how to find all indexes of a specified character within a string with JavaScript.
How to find all indexes of a specified character within a string with JavaScript?
To find all indexes of a specified character within a string with JavaScript, we can use the string matchAll method.
For instance, we write
const string = "scissors";
const matches = [...string.matchAll(/s/g)];
const indexes = matches.map((match) => match.index);
to call string.matchAll with a regex to find all instances of 's' in string.
Then we call matches.map with a callback that gets the index property of each match object to get the index of each match in a new array and return it.
Conclusion
To find all indexes of a specified character within a string with JavaScript, we can use the string matchAll method.
