index Of
Get the index (position) of the first occurrence of a specified value in a string.
"hello".indexOf("hel")Parameters
- searchValue: the item to find somewhere in the array.
- start: a number which is the position in the string to begin the search. You use this
if you want the search to start at someplace past
0, the first position.
Returns
- a number which is the position in the string where the element is found. This number
is
-1if a matching element isn’t found anywhere in the array.
Example
Get the index of “popcorn” in a list of movie treats.
let movieSnacks = "mints cola pretzel popcorn peanuts";
let popcorn = movieSnacks.indexOf("popcorn");