JavaScript Learning notes-some key points

JavaScript Learning notes-some key points table of Contents

• 1. Commissioning
• 2. == vs == =
• 3. Two function declarations
• 4. Technical sentiment

1Debugging

Mainstream browsers now offer developer mode to debug JavaScript through the console

2 == vs ===

= = First conversion type and then comparison, = = = First to determine the type, if not the same type directly to False.
= = = Constant Equals, the comparison of the two sides to absolutely the same

Alert (0 = = ""); Truealert (0 = = false); Truealert ("" = = False); Truealert (0 = = = ""); Falsealert (0 = = = False); Falsealert ("" = = = False); False

3Two kinds of function declarations

Mode 1:
var function name = function (parameter) {functional body};

Mode 2:
How about function ABC () {}?

What's the difference?

4Technical sentiment

Don ' t Repeat yourself (D.R.Y)
The best-of-the-get better at programming are to, and the learned to build something!

Author:galaxy

created:2015-09-23 Wed 17:31

Emacs 24.4.1 (ORG mode 8.2.10)

Validate

JavaScript Learning notes-some key points