The string value to be searched.
A string to be searched for within the value. Cannot be a regex. All
values that are not regexes are coerced to strings, so omitting it or passing undefined
causes strContains() to search for the string "undefined", which is rarely what you want.
Optional position: numberThe position within the string at which to begin searching for searchString. (Defaults to 0.)
true if the search string is found anywhere within the given string value, including
when searchString is an empty string; otherwise, false.
0.9.0
TypeError If searchString is a regex.
The strContains() method performs a case-sensitive search to determine whether one string may be found within another string, returning
trueorfalseas appropriate.This method lets you determine whether or not a string includes another string.