What do js and cw in the post bar mean?

What does js mean when it is released? JavaScript？ . JavaScript is a script language, a dynamically typed, weakly typed and prototype-based language with

What do js and cw in the post bar mean?

What does js mean when it is released? JavaScript？ . JavaScript is a script language, a dynamically typed, weakly typed and prototype-based language with built-in support types. Its interpreter is called JavaScript engine, which is a part of the browser and widely used in the scripting language of the client. It was originally used in HTML pages to add dynamic functions to HTML pages.

Cw in the post bar stands for continuous wave. Because it's shaped like. 1、0? Binary signal, so Morse code is usually used to send information. It generates a short message number by controlling the transmitter with a key? . ? Point and long signal? -? Draw pictures and use their different combinations to represent different characters, thus forming words and sentences. CW has the advantages of simple required equipment, narrow occupied frequency band, high transmission efficiency and longer communication distance under the same conditions.