Javascript-Common Code specification

Spec. 1: Be sure to write down global variables, and try to implement various functions, repeating code, etc. into a function.

Advantages: It helps to read and maintain. Prevent variable contamination.

Spec 2: All functions, variables, semantics. Spec. 3: Do not omit the semicolon at the end of the sentence. Specification 4: Do not use equal " = =", to use congruent "= = = "

Original: JS is a weakly typed language, and equality causes the default implicit conversions: false = = 0 = True

Spec. 5: Try to put all the variables in the first line. Such as:

var i, J, arr = [], obj = {};

Advantages:

1. Less code.
2. To help you remember all the variables
3. Prevent definition before using
4. Provide a single place to find variables

Rule 6: Do not use the new command instead of the object.create () command. Rule 7: Do not use the self-increment (+ +) and decrement (-) operators, substituting + = and-=. Rule 8: Always use curly braces to represent chunks.

if(a + b === c){    //dosomething}

Javascript-Common Code specification