Programmer should know
Error Handling
Error is the best friend of a programmer. No matter how expert in programming errors can happen at any time. try…. catch is one of the error handling method.
The (try….catch) syntex
try { // code… } catch (err) { // error handling }
This syntext allows to handle runtime errors. It nomrmaly allows to “try” running the code and “catch” errors that may occur in it.
Code style
A programmer's code must be clean and easy to read. Code it in a way that is both correct and human-readable.
As a beginner one should follow this:
No space: between the function name and the parentheses and between the parentheses and the parameter.
A space between parameters, arguments, for, while, if, etc.
Spaces around operators.
2/4 spaces for horizontal indention.
An empty line between logical blocks.
Semicolon after every statement.
Lines are not very long.
else without a line break.
Spaces around a nested call.
Comments
Comments can be two ways :
- Single line comments start with //
- Multiline comments are /* … */
Commenting is a good practice but sometimes it looks ugly. In a comment do not need to say how it works. To avoid unnecessary comments functions should name the way that it can describe its work itself.
