JavaScript Tutorial For Beginners | JavaScript Training | JavaScript Programming Tutorial | Edureka
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The document provides an overview of JavaScript, highlighting its importance, fundamentals, and usage in web development. It covers key concepts such as data types, variables, functions, conditional statements, loops, and structures like arrays and objects. The document emphasizes the benefits of JavaScript, including ease of learning and interactivity in web applications.
![Reference Data Types - Arrays
0 1 2 3 4
An array is a data structure that contains a list of elements. These elements are all of the
same data type, such as an integer or string.
Syntax:
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let arr[ ];
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JavaScript Tutorial For Beginners | JavaScript Training | JavaScript Programming Tutorial | Edureka
- 2. Agenda What is JavaScript? Why learn JavaScript? JavaScript Fundamentals
- 4. What is JavaScript? Web pages more interactive Interpreted language Interpreter Runs on the client’s computer JavaScript is a scripting language that allows you to implement complex things on web pages.
- 6. What Can JavaScript do? Web application Website Games Smart watches
- 8. The Big Picture – HTML, CSS & JavaScript HTML CSS JavaScript
- 9. Top Websites Built Using JavaScript
- 10. Benefits Of JavaScript Easy-peezy Easy to learn Speed
- 11. Benefits of JavaScript Provides rich framework Makes web pages more interactive
- 12. Benefits Of JavaScript No compilation needed Platform Independent
- 14. Variables Memory location Variable name Variable is a name given to a memory location which acts as a container for storing data. Syntax: 1 let age; 2 age = 22;
- 15. Constants Constants are fixed values that do not change during execution time. Syntax: 1 2 const mybirthday; mybirthday = ‘03.08.1996’ ; Examples of constants
- 16. Primitive Data Types Strings Boolean TRUE FALSE Numbers Null Undefined
- 17. Reference Data Types - Objects An object is a standalone entity, with properties and type. Syntax: 1 let object1 = { }; Name Age Eye-colour
- 18. Reference Data Types - Arrays 0 1 2 3 4 An array is a data structure that contains a list of elements. These elements are all of the same data type, such as an integer or string. Syntax: 1 2 let arr[ ]; let arr = new Array( ) ;
- 19. Reference Data Types - Functions A function is a block of organized, reusable code that is used to perform a single, related action. Functions Predefined Functions User Defined Functions Syntax: 1 2 3 function greetings( ) { alert(‘ Hello everyone! ‘); } name of the function enter parameters here
- 20. Conditional Statements Conditional statement is a set of rules performed if a certain condition is met. It is like an ‘If-Then’ statement. (IF a condition is met, THEN an action is performed) If Statement If code End Start True Condition False Exit Syntax: 1 2 3 if(condition) { statement; }
- 21. Conditional Statements Conditional statement is a set of rules performed if a certain condition is met. It is like an ‘If-Then’ statement. (IF a condition is met, THEN an action is performed) Else If Statement If code End Start True Condition False Else if code Syntax: 1 2 3 4 5 6 if(condition) { statement a; } else (condition) { statement b; }
- 22. Loops Loops are used to repeat a specific block until some end condition is met. Loops do whilewhilefor Start Conditional Code Condition False True End loop
- 23. While Loop While the condition is true, the code within the loop is executed. Start Conditional Code End True False Condition While loop Syntax: 1 2 3 while(condition) { loop code; }
- 24. Do While Loop This loop will first execute the code, then check the condition and while the condition holds true, execute repeatedly. Start Conditional Code End True False Condition Do while loop Syntax: 1 2 3 4 do { loop code; } while(condition);
- 25. For Loop Repeatedly executes the loop code while a given condition is TRUE. It tests the condition before executing the loop body. For loop Start Execute Statement (s) End Next item from sequence If no more itemsItem from sequenceSyntax: 1 2 3 for(begin; condition; step) { loop code; }
- 26. Switch Case The switch statement is used to perform different actions based on different conditions. Syntax: 1 2 3 4 5 6 7 8 9 10 switch(expression) { case 1 : code block 1 break; case 2 : code block 2 break; default : code block 3 } Start Switch expression End Case 1 Case 2 Default Code block 1 break; Code block 2 break; Default statement False False