WDE™ – Certified Entry-Level Web Developer Certification

Focus: Understand HTML's foundational aspects, including syntax, document structure, and character encoding.

Objectives covered by the block:

• Describe the basic structure of an HTML document, including the <!DOCTYPE> declaration.
• Understand the distinction between block-level and inline elements.
• Identify and correctly use basic HTML entities.
• Explain the importance of character encoding.
• Utilize comments to document HTML code.
• Demonstrate the use of basic tags (html, head, title, body).

• have the knowledge and skills to work with variables, i.e. naming, declaring, initializing and modifying their values;
• understand concepts such as scope, code blocks, shadowing, hoisting;
• know the basic properties of primitive data types such as boolean, number, bigint, undefined, null, and be able to use them;
• be familiar with the basic properties of the primitive data type string, including string literals – single or double quotes, escape character, string interpolation, basic properties and methods;
• know the basic properties of complex data types such as Array and Object (treated as a record) and be able to use them in practice.

• know what operators are and how we classify them (by type of operands, by number of operands, etc.)
• be able to use assignment, arithmetic, logical, and comparison operators in practice;
• have an understanding of the operation of the conditional operator and the typeof, instanceof, and delete operators;
• understand what the precedence and associativity of basic operators are and be able to influence it by means of bracket grouping;
• be able to perform basic two-way communication with the program user using the alert, confirm, and prompt dialog boxes.

• be able to force conditional execution of a group of statements (make decisions and branch the flow) using if-else and switch commands;
• be able to force a group of statements to repeat in a loop using the for, while, and do-while commands, using both dependent and independent conditions on the number of iterations;
• understand and be able to use loop-specific break and continue instructions;
• be able to use the for-in statement to iterate over properties of an object;
• be able to use the for-of statement to walk through the elements of an array.

• be able to declare and call functions;
• know how to pass call arguments to a function and return the result of its operation from it;
• understand the concept of a local variable and the effect of shadowing variables with the same names within a function;
• know that a function in JS is a first-class member and be able to take advantage of this by declaring functions using function expression and passing functions as arguments to calls of other functions;
• understand the concept of recursion in the context of functions and be able to solve simple programming problems by using it;
• have a basic understanding of the callback function and be able to use it asynchronously in conjunction with the setTimeout and setInterval methods;
• have a clear understanding of arrow function notation and be able to write functions alternatively as a regular declaration, a function expression, and an arrow function.

• understand the differences between syntactic, semantic, and logical errors;
• understand the concept of an exception and distinguish between the basic exceptions generated by JS when an error occurs: SyntaxError, ReferenceError, TypeError, RangeError;
• have the ability to handle exceptions using the try-catch-finally statement;
• be able to generate their own exceptions using the throw statement;
• have the skills to use the debugger for basic analysis of their own code, including: step-by-step execution, viewing and modifying variables, and measuring code execution time.