Laurence Svekis

Laurence Svekis is a web technology enthusiast, educator, and author who has been working in the field for over 20 years. He has expertise in web development technologies, such as HTML, CSS, JavaScript, jQuery, Bootstrap, PHP, and MySQL. Svekis is a prolific course instructor on Udemy, with over 500,000 students enrolled in his courses. He has authored over 100 online courses, covering a wide range of web technologies and tools, such as Google Apps Script, WordPress, React, Node.js, Express.js, and MongoDB. His courses are known for their practical and hands-on approach, with a focus on real-world projects and examples. In addition to teaching, Svekis is also a published author, with several books to his name Svekis is passionate about empowering people with the skills and knowledge they need to succeed in the rapidly evolving field of web technology. He is committed to providing high-quality educational resources that are accessible to anyone, regardless of their background or experience level.

Extracting Domain Name from URLs: A Tutorial

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function GET_DOMAIN(url){  let domain = ”;  let matches = url.match(/^https?\:\/\/([^\/?#]+)(?:[\/?#]|$)/i);  if(matches && matches[1]){    domain = matches[1];  }  return domain; } The given code defines a function called GET_DOMAIN that extracts and returns the domain name from a given URL. The domain name represents the network location of a website. The function follows these steps: To … Read more

Convert Values to Roman Numerals in Google Sheets with Custom Formula

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Convert a number to its Roman numeral equivalent function TO_ROMAN(num){  if(typeof num !== ‘number’) return NaN;  let roman = ”;  const romanValues = {    M: 1000,    CM: 900,    D: 500,    CD: 400,    C: 100,    XC: 90,    L: 50,    XL: 40,    X: 10,    IX: 9,    V: 5,    IV: 4,    I: 1  };  for(let key in romanValues){ … Read more

Google Sheets: Extract Last Characters from String

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Return the last number of characters of a string function LAST_VALS(str,num){  if(num >= str.length){    return str;  }  return str.slice(str.length – num); } The provided code defines a function called LAST_VALS that takes two parameters: str and num. The function returns the last num characters from the str string. Here is a detailed explanation of how … Read more

Google Sheets Formulas Examples and source code

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Google Sheets Formulas Capitalize the first letter of each word in a given string function CAPITALIZE_WORDS(str) {  const words = str.split(‘ ‘);  for(let i=0;i<words.length;i++){    words[i] = words[i].charAt(0).toUpperCase() + words[i].slice(1).toLowerCase();  }  return words.join(‘ ‘); } The given code defines a function called CAPITALIZE_WORDS that takes a string str as an argument. The purpose of the function … Read more

Free Ebook Quick Guide to Advanced JavaScript 78pg ebook download here

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What are the different data types in JavaScript? What is the difference between null and undefined in JavaScript? How does JavaScript handle asynchronous operations? Explain the concept of closures in JavaScript What are the differences between var, let, and const? What is hoisting in JavaScript? Explain the event delegation in JavaScript What is the difference … Read more

Explain the concept of “strict mode” in JavaScript.

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“Strict mode” is a feature in JavaScript that enforces stricter parsing and error handling, aiming to make JavaScript code more robust, eliminate certain error-prone behaviors, and help developers write cleaner code. When strict mode is enabled, the JavaScript interpreter applies a set of rules and throws more errors in specific situations. To enable strict mode, … Read more