Best practices in JavaScript development include using strict mode to avoid global variables and improve security by catching coding mistakes. Proper error handling with try-catch blocks is essential for managing exceptions and providing meaningful error messages. Additionally, leveraging ES6+ features enhances code readability, while avoiding eval() and sanitizing inputs protects against security risks.

1. 1USE STRICT MODE
BEST PRACTICES IN
JAVASCRIPT DEVELOPMENT
AVOID GLOBAL
VARIABLES
4
2
Implement proper error
handling using try-catch blocks
to manage exceptions and
provide meaningful error
messages for debugging.
5
Enabling strict mode helps catch
common coding mistakes and
makes JavaScript more secure by
preventing certain actions.
Minimize the use of global
variables to prevent variable
collisions and unintended side
effects. Use modules or closures
to encapsulate code.
3
Take advantage of ES6+ features
like arrow functions,
destructuring, classes, and
modules. They improve code
readability and maintainability.
SECURE
YOUR CODE
Avoid Eval: Avoid using eval() as it can
execute arbitrary code and pose
security risks.
Sanitize Inputs: Protect against XSS
(Cross-Site Scripting) attacks by
validating and sanitizing user inputs.
ERROR
HANDLING
USE MODERN
JAVASCRIPT
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