The Any data type is a dynamic data type that can hold Any value. TypeScript throws compile time errors if you assign a string-type variable to an integer-type variable. If you are unsure about what value a variable will hold, and you would like to opt out of compiler checking for the type in the assignment, you can use the Any data type:

let mixedList:any[] = [1, "I am string", false]; 
mixedList [2] = "no you are not"; 

Here, we used an array of the any type so that it can hold any type, such as number, string, and boolean.