We can get the nth occurrence of a substring in a string with some JavaScript string methods.
For instance, we can 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)
)
We call split with substring and index to split the string with substring as the delimited and limit the number of splits to index .
Then we join back the string with substring with join to join the string back together.
And then we get the length of the joined string to get the index of the index th occurrence of a string.
Therefore, the console log should log 16 since that’s the start of the 2nd occurrence of 'ABC' .
