Javascript programming specifications and javascript programming

Javascript programming specifications and javascript programming
1. Case Sensitive


2. The statement can end with a semicolon or no Semicolon. The semicolon is not required. It is more standard to have a semicolon.


3. // single line comment/* multi-line comment */


4. variables can be directly used without being declared. variables are all variant types.


5. In js, the first character of the built-in object is capitalized by using the first letter of the second word.
Var d = new Date ();
D. getFullYear ();
Window. alert ();
Window. setInterval ();
Window. setTimeout ();


6. Object-based advanced scripting language
Browser object, window object, Document Object DOM


7. A string can be enclosed by single quotation marks or double quotation marks.
Javascript specifications?

Here's your attachment, the ECMAScript5 specification is the ECMA-262


How to Learn javascript Object-Oriented Programming

Let's take a look at nicholas c. zakas's series of books on javascript advanced programming.