Experience with web development languages of HTML, CSS and JavaScript/jQuery. HTML Familiarity of HTML syntax for multiple specifications, including HTML 5. Knowledge of the semantic meaning of all HTML elements. Knowledge at the level to be able to hand-code markup. Including media and images. PHP Initial PHP CSS Specifying different CSS for various media, devices and displays. Best practices in CSS file organization and structure. How to define, combine and group CSS selectors for HTML elements, ID, classes, pseudo classes, child or sibling. CSS box model and methods for CSS positioning, absolute and relative. Knowledge of properties and attributes to control the display. Proficient with a CSS Preprocessor such as Sass or LESS. Best practices Methods to ensure browser & device compatibility Methods to ensure accessibility. File compression techniques for improving speed. JavaScript Knowledge of the operators, variables, datatypes, objects, properties and methods. Familiarity with control structures such as objects, functions, conditional statements, arrays, loops and expressions. Forms and regular expression validation and submitting data. Knowledge of how to apply logical operators and conditional statements. Processes for troubleshooting and debugging Familiarity with development and debugging tools for cross-browser issues. jQuery Knowledge of how to employ the jQuery library for visual effects, event handling, and document manipulation.