indexof

I'm implementing a program to find the first occurrence of an element in an array, but I can't figure out how to find all the ... Console.Write("The first time value on position [{0}] ", index); Console.ReadKey(); }

I know how to validate with HTML5 or CSS, but it's just out of curiosity: I found a code on the net that checks if the syntax ... ified this to <0 and then for <1 and the two also worked. Could you please give me a clearer explanation of this case?

Hello, I'm doing a code using TypeScript and I need to do a check to know which Page the user is on, I'm doing this check as ... enu, I can use equal in my example, because it has /Menu, but index has nothing that let it be so specific... how do I do it?

I have tried several ways with indexOf (it is a requirement of the question to use), but I am having a lot of difficulty, bec ... tes the position of an element in the array and also indicates a particular value for elements that are not inside the array.