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37. Input validation and sanitization
Validate and sanitize incoming request data to prevent malformed input and injection attacks.
1 min read Chapter 37 of 48
JavaScript
Input validation and sanitization
Checking and cleaning incoming data so your app only processes safe, well-formed values.
"I don't want a malformed or malicious field to crash my app or inject code into the database."
Validate: ensure input matches expected shape and rules; sanitize: transform or remove dangerous bits (e.g., HTML, control chars) before use.
"I don't want a malformed or malicious field to crash my app or inject code into the database."
Validate: ensure input matches expected shape and rules; sanitize: transform or remove dangerous bits (e.g., HTML, control chars) before use.