What is Javascript?

JavaScript is a loosely typed language. You do not have to specify data types of a variable when you declare it. Data types are converted automatically as needed during script execution.

Since the web, is a text delivery system. Browsers threats Javascript as a load-and-go programming language. This means that a Javascript program is delivered as text to the execution site. The program's text is then evals, compile into an executable form and executes by the browser.

While C, C++ interpreted and than compiled
C# compiled to MSIL
JAVA ...
and Javascript has no compilation or interpretation process?