String Function - indexOf
: StringMethod or Function
: This method takes a character or string as an argument. Searches the given string in the main string and returns the index or starting (first occurrence) position of the string. Returns -1 if the search string is not present in the main string.
var ss = "a string index of test ";
var result = ss.indexOf("ri");
In the above example,
- the main string is stored in a variable ss.
- the method takes a string "ri" as argument.
- this function searches in main string (ss) for the search string (ri).
- the first occurrence of the search word is found at the position 4 and is returned as the result.