About Lesson
Code Editor
Code editor aik software tool hai jo developers aur programmers ko code likhne aur edit karne mein madad karta hai. Yeh code likhne, syntax highlighting, aur error detection jaise features offer karta hai. Code editor mein apne kaam ko organize karne ke liye tools aur options hote hain, jo ke development ko aasaan aur productive banate hain. Popular code editors mein Visual Studio Code, Sublime Text, aur Atom shamil hain. Yeh software kai programming languages ko support karte hain aur beginners aur professionals ke liye useful hain.
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Variables in JavaScript
In JavaScript, a variable is a container for storing data values, such as numbers, text, or other data types. Variables are essential in programming as they allow developers to store, retrieve, and manipulate data efficiently. JavaScript has several ways to declare variables, primarily using var, let, and const. The let and const keywords were introduced in ES6 (ECMAScript 2015) and offer more control over variable scope compared to var. Variables created with let and const are block-scoped, while var is function-scoped. Variables are typically named following conventions to make code readable and maintainable, and they play a fundamental role in creating dynamic and interactive web applications.
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Constants in JavaScript
In JavaScript, a constant is a variable whose value cannot be changed once assigned. Constants are declared using the const keyword, introduced in ES6 (ECMAScript 2015). Unlike let or var, which allow reassignment, constants are used when a value should remain the same throughout the program. Constants are block-scoped, similar to let, meaning they exist only within the block in which they were defined. Although the reference of a constant cannot be changed, properties of objects or elements in arrays declared with const can still be modified. Using constants improves code stability and readability by ensuring certain values stay consistent.
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Data Types in JavaScript
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Arithmetic Operators in JavaScript
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Relational operators in JavaScript
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Logical Operators in JavaScript
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Conditional Statements If Else in JavaScript
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Ternary Operator in JavaScript
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Switch Statement in JavaScript
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While loop in JavaScript
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For Loop in JavaScript
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Objects in JavaScript
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For in loop in JavaScript
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Functions in JavaScript
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Function return and passing
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Function Expression in JavaScript
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Local-Global Variable | Default Value in JavaScript
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Arrow function in JavaScript
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Methods in JavaScript
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Constructor function in JavaScript
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Array and Fetching Elements in JavaScript
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Different types of data in Array
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Array methods in JavaScript
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For of Loop with an Array
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Array Destructuring in JavaScript
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Array forEach Method in JavaScript
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Array Method filter map reduce
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Set in JavaScript
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Map in JavaScript
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