JS Style guide

Table of contents

1. Statement

2. Variable

3. Comments

4. Operators

5. Conditional-structure-if

1. Statement

use correct spacing

bad example var x=y+2;

good example var x = y + 2;

2. variable

Use correct spacing, write descriptive keywords with camelCasing.

bad example var allmovies=y+2;

good example var allMovies = y + 2;

3. Comments

Write comments for code-block headings, to explain code and define last curly brackets

good example // ========================================================================= // Declaration of x variable // ============================================================================

var x = y + 2; // adds 2 to y

4. Operators

Keep a space before and after any operator.

bad example var x=y+2;

good example var x = y + 2;

5. Condition structure - if

Use space after the keyword if. Use space after the parenthesis Use open curly braces at the end of first line. use close curly braces in a new line. keep the else keyword on the same line as the close curly braces of the previous set of brackets indent the code as given in the good example

bad example if(age>17) { alert('hi'); } else{alert('hello');}

good example if (age > 17) { alert('hi'); } else { alert('hello'); }