Code specification for novice Web developers

The author rookie of the most will not fly, so these basic habits are not formed, just take time to deliberately make a note to facilitate their code, interested in the big guy more guidance.

Good coding habits to develop a lot of money, summed up the code should pay attention to the details of "reference elevation codes", The silent Spit groove, said that the front-end does not need the foundation of English those institutions are really to lose their wisdom;

A. Naming constraints: Hungarian naming/Hump naming/Pascal nomenclature

Hungarian nomenclature: This naming method can be subdivided into system Hungarian nomenclature and Hungarian applied nomenclature.

Syntax: variable name = type + Description

Convention type:

A---array

O---Object

s---string

L---Float

FN---function

I---int

R---Regular

B---Boolean

Hump naming (Small hump nomenclature): The first word starts with a lowercase letter, and the first letter of all subsequent words is capitalized;

Pascal's name (Big hump nomenclature): The first letter of each word is capitalized;

1. Variable name: noun

2. Method naming: Verbs

Common Verb Conventions:

Can---Determine if an action is performed

Has---Determine if there is a value

Is---Determine if it is a value

Get---get a value

Set---setting a value

Load---loading some data

3. Special function/variable non-rigid contract naming:

1): constant: All uppercase words are divided by "_";

2): constructor: Big hump naming;

3): Private member (Attribute/method): With "_" as the prefix;

B. Coding non-rigid principle:

1. Event object is not passed, if necessary, only the necessary data can be transmitted;

2. Application layer logic can be carried out without reliance on any behavior;

3. Event layer only handles events;

4. The code has a single responsibility;

5. Respect for object ownership is to modify only the objects you create;

6. Avoid global variables;

C. Code performance

1. Avoid global lookups and minimize the search scope chain length;

2.with,eval,settimeout the first parameter character form, Function avoids the use;

3. Cycle optimization

Minus value Iteration

Simplified termination conditions

Simplified loop body

As far as possible after the test cycle is do-while

4. Minimize the number of statements;

5. The numerical operation bit operation is faster;

6. Optimize DOM operation (this piece has a lot of things to study 1:30 will not share);

D: Code comment common identifiers:

[email protected] The author of the program explains

[Email protected] Version description of source file

[Email protected] Method parameter description

[email protected] Not recommended methods of use

Description information for the return value of the [email protected] Method

[email protected] See, specifying reference content

Exception type thrown by [email protected]

[Email protected] throws an exception

[Email protected] Sample code

The notes are so much. slowly cultivated;

Code specification for novice Web developers