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Google Apps Scripts and Web Development Tutorials and Resources by Laurence Svekis
JavaScript Code Exercises 2 Exercise 1: Reverse a stringExercise 2: Factorialize a numberExercise 3: Check for palindromeExercise 4: Find the longest wordExercise 5: Title case a sentenceExercise 6: Return largest numbers in arraysExercise 7: Confirm the endingExercise 8: Repeat a stringExercise 9: Truncate a stringExercise 10: Chunky monkey Exercise 1: Reverse a string Write a … Read more
JavaScript Code Exercises 1 Write a function that takes an array of numbers and returns the sum of all the positive numbers in the array.Write a function that takes an array of strings and returns the shortest string in the array.Write a function that takes a string and returns a new string with all the … Read more
JavaScript Code Mistakes and Solutions 4 Not using ‘try-catch-finally’ for resource management:Not using ‘const’ for values that won’t change:Not checking for null or undefined:Not using ‘Array.prototype.filter()’:Not using ‘Array.prototype.forEach()’:Not using ‘Object.assign()’ for object cloning:Not using ‘Array.prototype.some()’ or ‘Array.prototype.every()’:Not using ‘Array.prototype.find()’ or ‘Array.prototype.findIndex()’:Not using ‘Array.prototype.sort()’:Not handling asynchronous code properly: Not using ‘try-catch-finally’ for resource management: Not using … Read more
JavaScript Code Mistakes and Solutions 3 Not using ‘async/await’ with promises:Not using the ‘this’ keyword correctly:Not understanding the difference between ‘== and ‘===’:Using ‘var’ instead of ‘let’ or ‘const’:Not handling errors correctly:Not using ‘Array.prototype.map()’ correctly:Not understanding the event loop:Not using ‘template literals’ for string interpolation:Not using ‘Object destructuring’:Not using ‘Array.prototype.reduce()’: Not using ‘async/await’ with promises: … Read more
JavaScript Code Mistakes and Solutions 2 #javascript #js #webdev #frontend #coding #programming #developer #webdevelopment #javascriptdeveloper #javascriptcoding #javascriptprogrammer #javascriptcommunity #javascriptlove #javascriptworld #javascriptlife #javascriptrocks #javascripttips #javascriptlearning #javascripttutorial #javascriptprojects Not using ‘strict mode’:Using for-in loop incorrectly:Modifying the prototype of built-in objects:Using ‘eval()’:Not handling promises correctly:Using ‘setTimeout()’ incorrectly:Not using ‘const’ or ‘let’:Using ‘new Object()’:Not understanding closures:Using ‘== null’ instead … Read more
JavaScript Code Mistakes and Solutions 1 Using undeclared variables:Misunderstanding the scope of variables:Not using semicolons:Not using === operator:Ignoring asynchronous code:Not using error handling:Ignoring memory leaks:Overusing global variables:Not using the ‘this’ keyword correctly:Ignoring code quality: Using undeclared variables: This occurs when you try to use a variable that has not been declared or initialized. It can … Read more
JavaScript Quiz with Answers What is the difference between == and === operators in JavaScript? What is the difference between null and undefined in JavaScript? What is the difference between let and var in JavaScript? What is a closure in JavaScript? What is the difference between call() and apply() in JavaScript? What is a promise … Read more
JavaScript Quiz 3 #JavaScriptQuiz #JSQuiz #JavaScriptTrivia #JSTrivia #JavaScriptQuestions #JSQuestions #JavaScriptChallenge #JSChallenge #JavaScriptTest #JSTest #WebDevelopmentQuiz #WebDevQuiz What is the difference between == and === in JavaScript? The double equals (==) operator compares values after converting them to a common type, while the triple equals (===) operator compares values without type conversion. This means that the triple … Read more
JavaScript Best Practices Use Strict Mode:Declare Variables Properly:Use Descriptive Names:Use Comments:Use Templates Instead of Concatenation:Use Strict Comparison:Avoid Global Variables:Use Object and Array Destructuring:Use Arrow Functions:Use Promises and Async/Await: JavaScript best practices refer to a set of guidelines and recommendations that developers should follow while writing JavaScript code. These best practices are intended to ensure that … Read more
JavaScript Quiz What is the result of the following code? console.log(1 + “2” + 3 + 4); a) “1234” b) “10” c) “6” d) “124” What is the result of the following code? console.log(typeof null); a) “object” b) “null” c) “undefined” d) “boolean” Which of the following is NOT a valid way to declare a … Read more