JavaScript

How to Serialize Form data with Vanilla JavaScript

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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

Store object to localStorage Code Snippet

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The code defines two functions, addToStorage() and viewStorage(), that interact with the localStorage object in the browser. The addToStorage() function retrieves the values entered in two form fields using the getElementById() method, and creates an object called myObj with these values as properties. It then logs this object to the console using console.log(). Next, the … Read more

Top 10 Tips to write better JavaScript Code

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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

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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

What’s the difference between using .textContent vs .innerText vs .innerHTML?

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All three of these properties are used to manipulate or get the text content of an element in HTML, but there are some important differences between them. Example: <div id=”example”> This is some <b>bold text</b>. </div> Using textContent on the div element will return “This is some bold text.”. Example: <div id=”example”> This is some … Read more

Common JavaScript Coding Mistakes

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JavaScript coding mistakes and their solutions: 1. Forgetting to close curly braces Curly braces are used to group statements in JavaScript. If you forget to close a curly brace, the JavaScript interpreter will not know where the statement ends, and this can lead to errors. Solution: Always make sure to close your curly braces. If … Read more

JavaScript Daily Quiz

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JavaScript Quiz Questions JavaScript var x = 1; var y = 2; console.log(x + y); Code snippet Output: 3 JavaScript var x = “Hello”; var y = “World”; console.log(x + y); Code snippet Output: HelloWorld JavaScript var x = 1; var y = 2; if (x > y) {   console.log(“x is greater than y”); } … Read more

10 JavaScript Code Interview questions with code example and detailed explanations

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What is the difference between == and === in JavaScript? What is the difference between var, let, and const in JavaScript? What is the difference between an object and an array in JavaScript? What is the difference between a function declaration and a function expression in JavaScript? What is the difference between a closure and … Read more

JavaScript Quiz Questions and Answers 2

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JavaScript Quiz Questions and Answers 2 What is a closure in JavaScript and how do you create one?What is the difference between == and === in JavaScript?How do you declare a variable in JavaScript?What is the difference between null and undefined in JavaScript?How do you check if a variable is an array in JavaScript?What is … Read more

JavaScript Quiz Questions and Answers V1

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JavaScript Quiz Questions and Answers What is a closure in JavaScript and how do you create one?What is the difference between == and === in JavaScript?How do you declare a variable in JavaScript?What is the difference between null and undefined in JavaScript?How do you check if a variable is an array in JavaScript?What is the … Read more