Published Feb 20 2019
Gives the position of the first occurrence of the string passed as parameter in the current string. Returns -1 if the string is not found.
'JavaScript'.indexOf('Script') //4
'JavaScript'.indexOf('JavaScript') //0
'JavaScript'.indexOf('aSc') //3
'JavaScript'.indexOf('C++') //-1
You can pass a second parameters to set the starting point:
'a nice string'.indexOf('nice') !== -1 //true
'a nice string'.indexOf('nice', 3) !== -1 //false
'a nice string'.indexOf('nice', 2) !== -1 //true
I wrote an entire book on this topic 👇
I also got a super cool course 👇
© 2023 Flavio Copes
using
Notion to Site
Interested in solopreneurship?