Loops run a block of code repeatedly as long as a specified condition remains true. javascript
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5 == "5" returns true , but 5 === "5" returns false . 2. What is Variable Hoisting?
Organizing clean codebases using export and import statements. How to Find and Download the Best JavaScript Notes PDF
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Unlike traditional class-based languages like Java or C++, JavaScript uses a model. Prototypal Inheritance & The Prototype Chain
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function add(a, b = 0) return a + b;
: Offers downloadable lecture notes, including “Introduction to Javascript” and “Javascript Notes 2018” covering data types, text editors, variables, arrays, objects, boolean algebra, iteration, and functions. These university-style notes are completely free to download.
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How to write standard functions, function expressions, and ES6 Arrow functions. 2. Advanced JavaScript (The Tricky Parts) 5 == "5" returns true , but 5 === "5" returns false
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let fruits = ["Apple", "Banana", "Mango"]; fruits.push("Orange"); // Adds to end: ["Apple", "Banana", "Mango", "Orange"] fruits.pop(); // Removes from end: ["Apple", "Banana", "Mango"] fruits.shift(); // Removes from start: ["Banana", "Mango"] fruits.unshift("Kiwi"); // Adds to start: ["Kiwi", "Banana", "Mango"] // Advanced Iterators let numbers = [1, 2, 3, 4, 5]; let doubled = numbers.map(num => num * 2); // [2, 4, 6, 8, 10] let evens = numbers.filter(num => num % 2 === 0); // [2, 4] Use code with caution. Objects and the 'this' Keyword
Before Promises, nested callbacks made code unreadable (Callback Hell). A Promise represents the eventual completion (or failure) of an asynchronous operation. javascript