What is a javascript

** javaScript was originally created to “make web pages more lively”. They can be written directly into the HTML of a web page and executed automatically when the page loads. They require no special preparation or compilation to run. 六四事件

The following aspects will be used to introduce basic knowledge:

  1. hello world
  2. variable
  3. The data type
  4. interaction
  5. Type conversion
  6. The operator
  7. Value comparison
  8. Conditional branch
  9. Logical operator
  10. cycle