Sometimes, we want to get the nth occurrence in a string with JavaScript.
In this article, we’ll look at how to get the nth occurrence in a string with JavaScript.
How to get the nth occurrence in a string with JavaScript?
To get the nth occurrence in a string with JavaScript, we can use the split and join methods.
For instance, we write
const string = "XYZ 123 ABC 456 ABC 789 ABC";
const getPosition = (string, subString, index) => {
return string.split(subString, index).join(subString).length;
};
console.log(
getPosition(string, "ABC", 2)
);
to define the getPosition function.
In it, we call string.split with subString and index to split the string starting at index with subString as the separator.
Then we call join with subString to join the returned string array back into a string and get its length.
Then we get the start index of the 2nd 'ABC' with getPosition(string, "ABC", 2).
Conclusion
To get the nth occurrence in a string with JavaScript, we can use the split and join methods.
