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Google Apps Scripts and Web Development Tutorials and Resources by Laurence Svekis
In JavaScript, when an HTML element has an id attribute defined, it automatically becomes available as a global variable in the DOM (Document Object Model). This means you can directly access that element using its id as a variable without the need for any explicit lookups or queries. For example, if you have an HTML … Read more
You can use the FormData API in JavaScript. Here’s an example of how you can serialize form data: function serializeFormData(form) { var formData = new FormData(form); var serializedData = {}; for (var [name, value] of formData) { if (serializedData[name]) { if (!Array.isArray(serializedData[name])) { serializedData[name] = [serializedData[name]]; } serializedData[name].push(value); } else { serializedData[name] = value; } … Read more
Using == instead of ===Not using const and letNot using semicolonsNot handling errorsNot using strict modeNot using curly bracesNot using Array.prototype.forEach()Not using const when defining functionsNot using the let keyword in for loopsNot using === or !== with null or undefined Using == instead of === Using == instead of === can lead to unexpected … Read more
top 10 coding mistakes with JavaScript and how to avoid them: #javascript #learnjavascript #javascripttutorial #javascriptbeginner #javascriptintermediate #javascriptadvanced #javascripttips #javascripttricks #javascriptcode #javascriptproblems #javascriptchallenges #javascriptdom #javascriptajax #javascriptjquery #javascriptnode #javascriptreact #javascriptangular 1. Not declaring variables. When a variable is not declared, it is considered a global variable. This means that it can be accessed from anywhere in the … Read more
Learn to Code JavaScript Find the largest number in an array:Check if a string is a palindrome:Calculate the sum of an array:Check if a number is even or odd:Reverse a string:Find the factorial of a number:Write a function to check if a given number is even or odd.Write a function to reverse a string.Write a … Read more
Make a JavaScript Game – Create your first HTML5 Canvas JavaScript web based game from scratch explore how make a game Make your own games online – start with this amazing simple game project creating a Breakout game from scratch Explore how you can write code to create GAMEs – Games that run within any … Read more
5 JavaScript coding Exercises 2 FizzBuzzPalindrome checkerHangman gameShopping cartTyping speed test FizzBuzz Source code: for (let i = 1; i <= 100; i++) { if (i % 3 === 0 && i % 5 === 0) { console.log(‘FizzBuzz’); } else if (i % 3 === 0) { console.log(‘Fizz’); } else if (i % 5 === … Read more
5 JavaScript coding Exercises 1 Reverse a String:FizzBuzz:Palindrome Checker:Random Number Generator:Capitalize the First Letter of Each Word: Reverse a String: Write a function that takes a string as an argument and returns the string in reverse order. For example, if the input string is “hello”, the output should be “olleh”. function reverseString(str) { return str.split(“”).reverse().join(“”); … Read more
JavaScript BreakOut Game This code is an HTML file that contains a canvas element with an id of “canvas” and some JavaScript code to create a game of Brick Breaker. The canvas element is used to display the game graphics and the JavaScript code is used to handle user input, move the game elements, and … Read more
10 JavaScript Coding Mistakes with solutions Not declaring variables properly:Using the wrong comparison operator:Not using semicolons:Not understanding scoping:Using “var” instead of “let” or “const”:Instead, use “let” or “const”:Using “==” instead of “===”:Not using curly braces in if statements:Using “parseFloat” instead of “parseInt”:Not handling asynchronous code properly:Example using a promise:Example using async/await:Not properly scoping variables:Example using … Read more