Terms starting with "C"
CSS Animations & Transitions CSS3 CSS transitions animate property changes smoothly; keyframe animations define multi-step sequences — both should use GPU-composited properties (transform, opacity) for smooth 60fps.
2mo ago
frontend intermediate
CSS Cascade, Specificity & Inheritance CSS3 How browsers decide which CSS rule wins — cascade layers, origin, specificity score, and source order all play a role.
2mo ago
frontend intermediate
CSS Container Queries CSS4
A CSS feature that lets elements adapt their styles based on their parent container's size rather than the viewport — enabling truly reusable responsive components.
2mo ago
frontend intermediate
CSS Custom Properties (Variables) CSS3
Native CSS variables — --primary-color: #4f9cff — that cascade, inherit, and can be updated at runtime via JavaScript.
2mo ago
frontend beginner
CSS Flexbox & Grid CSS3
Flexbox handles one-dimensional layouts (row or column); Grid handles two-dimensional layouts — together they replace float and table hacks.
2mo ago
frontend intermediate
CSS Specificity CSS3
The algorithm browsers use to determine which CSS rule wins when multiple rules target the same element — calculated as a three-part score (ID, class, element).
2mo ago
frontend intermediate
cURL in PHP PHP 5.0+
PHP's cURL extension enables making HTTP, FTP, and other protocol requests — the standard way to consume external APIs and services.
2mo ago
php intermediate
CVSS
Common Vulnerability Scoring System — a 0–10 numeric score representing the severity of a security vulnerability.
2mo ago
security beginner
CWE
Common Weakness Enumeration — a community-maintained list of software weakness types with unique numeric IDs.
2mo ago
security beginner
Cyclomatic Complexity
A count of linearly independent paths through a function — each if, for, while, case, and && adds 1.
2mo ago
quality intermediate
Closures & Anonymous Functions PHP 5.3+
First-class anonymous functions that can capture variables from their enclosing scope via the use keyword.
2mo ago
php intermediate
Code Smell
A surface indication in code that usually corresponds to a deeper design problem — not a bug, but a maintainability risk.
2mo ago
quality beginner
Cognitive Complexity
A readability-focused complexity metric that penalises nesting more heavily than cyclomatic complexity.
2mo ago
quality intermediate
Cross-Site Request Forgery (CSRF) PHP 5.0+ A forged request tricks an authenticated user's browser into performing an unintended action on a site they're logged into.
CWE-352 OWASP A1:2021
2mo ago
security intermediate
6.5
Cross-Site Scripting (XSS) PHP 5.0+ User-supplied content rendered in the browser without escaping, allowing script injection into other users' sessions.
CWE-79 OWASP A3:2021
2mo ago
security intermediate
6.1