![]() fromIndexPosition: The indexOf() method will search for the particular substring staring with fromIndexPosition.substringToBeSearched: is the substring to be searched. ![]() IndexOf(substringToBeSearched, fromIndexPosition) In Javascript indexOf() method is used to return the index of the first occurrence of specified string within a string object from where it is called. ![]() ![]() Javascript check if string contains substring using indexOf() ![]()
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