Introduction
Environment Setup
What is JavaScript vs ES-5 or ES-6
JavaScript Syntax
JavaScript Comments
JavaScript Use Strict
JavaScript Variables
JavaScript Reserved Words
JavaScript Scope
JavaScript Data Types
JavaScript Function
Function overloading not possible in JavaScript
JavaScript Arrow Function
JavaScript Numbers
JavaScript Number Methods
JavaScript String
JavaScript String Methods
JavaScript if else and else if
JavaScript Comparison and Logical Operators
JavaScript Arrays
JavaScript Sorting Arrays
JavaScript Array Iteration Methods
JavaScript for loop
JavaScript Let keyword
JavaScript Const
JavaScript Objects
JavaScript Object Methods
JavaScript ES5 Object Methods
JavaScript Object Accessors
JavaScript Math Object
JavaScript Random
JavaScript this Keyword
JavaScript Date Objects and Date Formats
JavaScript Classes
JavaScript While Loop
JavaScript Break and Continue
JavaScript Switch Statement
JavaScript JSON
Error handling in JavaScript
JavaScript comment are two type one is multiline comment and another is single line comment. Commented code are not execute it just programmer or developer understand how to work the code or why this code are written. Now given bellow the JavaScript Comments code and explain the Comments code:
Single Line Comments: //x = 5; this variable declares and assign the value
Multi-line Comments: /* x = 5; variable declare and assign the value*/
Now given bellow the example code:
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
/*Create the function
and recive the peramitar
and retun the addd name
*/
function Add(firstName,lastName){
return firstName +" "+lastName;
}
//recive the value
var result=Add("Farhan","Sakib");
//print the value
console.log(result);
</script>
</body>
</html>
Single line comment is use when we write Single code documentation but Multi-line Comments, comment use when we use Multi-line code documentation.
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