From Zero to Web Hero: Learn HTML & CSS, JavaScript, and PHP

Explore JavaScript, a client-side scripting language embedded in HTML, to add validation, interactivity, and animations, and learn how it runs in the browser with HTML and CSS.

Learn how JavaScript arrays are fixed-size collections stored in memory with zero-based indices and initialization options. Access elements by index and explore a bubble sort example.

Explore JavaScript variables by declaring with var, using loosely typed values, recognizing local and global scope, and printing with document.write and plus-concatenation, including line breaks with br.

Explore how JavaScript uses conditional statements like if else and switch to run code based on evaluated conditions, contrasting linear execution with conditional branching.

Explore how if-else statements evaluate conditions, use prompts and parseInt to compute a percentage from three marks (max 50), and assign grades with else if and alerts.

Explore iteration statements that power loops to run code blocks, using for, while, and do while, until conditions become false, with examples like finding even numbers from 1 to 100.

Learn the for loop, including initialization, condition, and increment, and apply it to known-iteration tasks like summing even numbers from 1 to 100 and computing factorials.

Learn how to use the while loop in JavaScript to execute code until a boolean condition becomes false, with examples counting digits and input-driven termination.

Learn how the do while loop guarantees at least one execution and checks the condition after each iteration, with a mandatory semicolon and a pin-entry example with three attempts.

Explore loop control statements, including break and continue, to terminate or skip iterations in for, while, and do while loops, with practical examples of breaking at five and skipping five.

Use the JavaScript switch statement to evaluate a user input character, classify it as a vowel or consonant, and use a default case with break for clean menu-like behavior.

Explore JavaScript operators, including unary, binary, and ternary forms, and learn assignments, arithmetic, comparison, and logical operators with practical examples using num1 and num2.

Explore how JavaScript logical operators and the ternary operator work, using and, or, not, and conditional logic with a login example and prompt-based inputs.

Explore the six JavaScript comparison operators, ==, !=, >, <, >=, <=, and how they compare values to yield boolean results, illustrated with 100 and 10.

Explore how JavaScript functions modularize code, enable reusability, and use parameters and return values, with examples like on click events and simple output.

Explore event-driven programming in JavaScript by using HTML event attributes like onclick and onload, and learn to swap images with mouseover and mouseout to respond to user actions.

Master JavaScript error handling by using try, catch, finally, and throw to manage runtime exceptions, with practical examples of handling and ensuring cleanup in finally.

Explore how JavaScript uses cookies to manage client-side state, including session and persistent cookies, and how to set a cookie with document.cookie from a simple web form.

Learn to create client side animations with an image slideshow using JavaScript. Implement an image array, index switching, and setInterval to cycle images, with mouse over pause and onload start.

Learn how to create JavaScript objects with multiple properties, read properties using dot notation and for-in loops, and work with JSON data in Node or Angular apps.

Learn how to implement page redirects with JavaScript by using window.location, setTimeout, and onload to navigate from one page to another after a delay.

Explore PHP basic syntax, write a hello world script, run from command line or serve as a web page, using echo, PHP tags, and localhost hosting.

Learn PHP web concepts by contrasting client-side and server-side processes with HTML, JavaScript, and PHP, including client and server date differences.

Explore PHP console input and output by using fscanf and printf to read length and breadth from stdin and display the calculated area to stdout, with a command-line example.

Explore how PHP arithmetic operators perform addition, subtraction, multiplication, division, modulus, and increment and decrement using a simple script with a=42 and b=20, showing results like 62, 22, 840, 2.1, and 2.

Learn how PHP assignment operators work by using two variables to demonstrate basic assignment and cumulative operators like plus-equals, minus-equals, times-equals, divide-equals, and mod-equals, with c updating accordingly.

Master the PHP conditional operator, or ternary operator, with three operands and the a > b ? a : b syntax, illustrating short form if logic.

Explains PHP function statements, including call by value and call by reference with ampersand, default arguments, and variable length arguments with return values.

Explore the PHP break statement in loops, including how it terminates a while loop when a random value equals five, saving iterations and simplifying control flow.

Explore how the PHP continue statement inside a while loop acts opposite to break by skipping the iteration's remaining statements and starting the next one when a condition is met.

Explore PHP decision making with if else if else and switch cases, using rand to generate values and classify them into ranges like less than 25 or less than 50.

Explore how while loops work in PHP through two examples: a counter from 1 to 10 with increment and print, and a random 1-10 loop that ends when five appears.

Master PHP for loops by exploring initialization, condition, and increment clauses, including examples that print 1–10, use rand to stop when five occurs, and traverse an array of five elements.

Learn how PHP uses the MySQL API to connect, create a database and employee table, insert records, and verify results with phpMyAdmin on a vamp server.

Use the MySQL AI API in PHP to work with procedural and object oriented interfaces, display records, and count rows from the employee table.

Learn PHP inheritance by extending the student class into engineering student, sharing protected name, age, and marks, adding branch, and overriding get details to display all data.

Explore anonymous classes in PHP 7 by creating unnamed objects with a constructor, x as a member variable, and add and subtract methods that yield 30 and 5.

Learn how to set and retrieve cookies in a PHP web application using setcookie, and read values with $_COOKIE via a simple form posting to setcookie.php.

Master PHP file input and output by writing data to a new file with fopen in write mode and fwrite, then reading it back with fopen in read mode.

Explore how PHP handles errors with die, file existence checks, and fopen, showing termination or file opening. Create a custom error handler with set_error_handler and manage error reporting.

Learn how PHP implements the try throw and catch mechanism to handle division by zero errors. Explore using a custom exception handler with set exception handler to process uncaught exceptions.

Compare get and post form submission in PHP, showing how data becomes query strings or post bodies, and how $_GET, $_POST, and $_REQUEST retrieve values from the PHP script.

Explore PHP seven's cryptographically secure pseudorandom number generator (CSPRNG), using random bytes and random int to generate secure numbers and convert byte sequences to hex for readable output.

Discover scalar type declarations in PHP 7 by declaring integer arguments and a typed return value in a function, and learn how coercive and strict modes enforce or reject types.

Learn how the PHP null coalescing operator checks if a variable is set and returns a default value, replacing the ternary operator, with examples using a form input named user.

Explore the FP7 spaceship operator in PHP, a three-valued comparison that returns -1, 0, or 1 depending on the operands, with numbers, floats, and strings.

Explore PHP polymorphism by using interfaces and abstract classes, showing overridden clicked methods in button classes, and calculating areas for rectangle and circle.

Explore setting and reading PHP session variables with a form posted to the same script, using session_start and $_SESSION to store the user name and read it on another page.