Thursday, July 9, 2020

JavaScript Complete Basics Tutorial Part 2 | Variables | Constants | Console | String | Int | Float

JavaScript Complete Basics Tutorial Part 2 | Variables | Constants | Console | String | Int | Float

Tutorial Cover :

1. JavaScript Hello World
2. JavaScript Alert Dialog
3. How to Declare Variable in JavaScript
4. How to Declare Constants in JavaScript
5. How to Add JavaScript in HTML Pages
6. How to Escape String in JavaScript
7. How to Create String in JavaScript
8. How to do Mathematical Operation in JavaScript
9. How to Execute Mathematical Expression
10. How to Take User Input using Prompt

Tutorial Link : https://youtu.be/auY598fmCiE

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Source Code : https://github.com/hackstarsj/JavaScriptCompleteTutorial

HTML CODE

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <title>Javascript Tutorial</title>
<h1>Javascript Tutorial</h1>
<script src="index.js"></script>

view raw index.html delivered with ❤ by emgithub

JavaScript Code

//alert("Hello World");
var name="Rahul";
var lastName="Kumar";
console.log(name);
console.log(lastName);
name="Vishal";
console.log(name);
console.log(age);
const address="Delhi";
console.log(address);
//You Can't Assign Value in Constant
//address="New Address";
//console.log(address);
var _name="AMan";
console.log(_name);
var $newname="Rahul";
console.log($newname);
//You can't Start Variable name with number or special Character only  small letters,underscore(_),$ is Allowed
var name2="Aman 2";
console.log(name2);
//Number Data
//integer Data
var intnum1=10;
var intnum2=20;
var intnum3=-30;
console.log(intnum1);
console.log(intnum2);
console.log(intnum3);
//floating variable data
var floatdata1=10.50;
var floatdata2=120.50;
var floatdata3=-20.50;
console.log(floatdata1);
console.log(floatdata2);
console.log(floatdata3);
//Declaring String
var string1="Rahul";
var string2='Aman 2#$dsad cascas';
var string3=`Rahul`;
//string must close with double quotes or single quote or tilde which you use in declaring string opening
//var string4="Aman 11';
console.log(string1);
console.log(string2);
console.log(string3);
//Operators : + , - ,* , / % ,=
//Using operator with number
var num1=5;
var num2=10;
console.log(num1+num2);
console.log(num1-num2);
console.log(num1/num2);
console.log(num1*num2);
//using operator with strings
var string4="Aman";
var string5="Kumar";
//it concatenate the string
console.log(string4+" "+string5);
console.log(string4-string5);
var string6=`Vishal 6+4`;
console.log(string6);
//expression execute
var string7=`vishal ${6+4*10-500/10}`;
console.log(string7);
//not work because you must start string with tilde symbol (`)
var string8='vishal ${6+4}';
console.log(string8)
//Line Break
var string9='Vishal Kumar \n Delhi';
console.log(string9);
//Using Single Quote in string
var string10='Vishal Kumar \n Delhi \n Father \'s Name : FF';
console.log(string10);
//Using Double Quote in string
var string10="Vishal Kumar \n Delhi \n Father \"s Name : FF";
console.log(string10);
//Adding Error in JS
//Integer Addition Example
var num3=prompt("Input Num 1");
var num4=prompt("Input Num 2");
var num5=parseInt(num4)+parseInt(num3);
console.log("Sum of Num1 + Num 2 is : "+num5);
//Float Addition Example
var num6=prompt("Input Num 1");
var num7=prompt("Input Num 2");
var num8=parseFloat(num6)+parseFloat(num7);
console.log("Sum of Num1 + Num 2 is : "+num8);

view raw index.js delivered with ❤ by emgithub

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Thursday, July 9, 2020

JavaScript Complete Basics Tutorial Part 2 | Variables | Constants | Console | String | Int | Float

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React JS Installation | Create Project React JS | How to Install Node JS for React JS Development

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	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Javascript Tutorial</title>

	</head>
	<body>
	<h1>Javascript Tutorial</h1>
	<script src="index.js"></script>
	</body>
	</html>

	//alert("Hello World");
	var name="Rahul";
	var lastName="Kumar";
	console.log(name);
	console.log(lastName);
	name="Vishal";
	console.log(name);
	age="14";
	console.log(age);

	const address="Delhi";
	console.log(address);
	//You Can't Assign Value in Constant
	//address="New Address";
	//console.log(address);

	var _name="AMan";
	console.log(_name);
	var $newname="Rahul";
	console.log($newname);

	//You can't Start Variable name with number or special Character only small letters,underscore(_),$ is Allowed

	var name2="Aman 2";
	console.log(name2);

	//Number Data
	//integer Data
	var intnum1=10;
	var intnum2=20;
	var intnum3=-30;

	console.log(intnum1);
	console.log(intnum2);
	console.log(intnum3);

	//floating variable data
	var floatdata1=10.50;
	var floatdata2=120.50;
	var floatdata3=-20.50;

	console.log(floatdata1);
	console.log(floatdata2);
	console.log(floatdata3);

	//Declaring String
	var string1="Rahul";
	var string2='Aman 2#$dsad cascas';
	var string3=`Rahul`;

	//string must close with double quotes or single quote or tilde which you use in declaring string opening
	//var string4="Aman 11';
	console.log(string1);
	console.log(string2);
	console.log(string3);

	//Operators : + , - ,* , / % ,=
	//Using operator with number
	var num1=5;
	var num2=10;
	console.log(num1+num2);
	console.log(num1-num2);
	console.log(num1/num2);
	console.log(num1*num2);

	//using operator with strings
	var string4="Aman";
	var string5="Kumar";
	//it concatenate the string
	console.log(string4+" "+string5);
	console.log(string4-string5);


	var string6=`Vishal 6+4`;
	console.log(string6);
	//expression execute
	var string7=`vishal ${6+4*10-500/10}`;
	console.log(string7);
	//not work because you must start string with tilde symbol (`)
	var string8='vishal ${6+4}';
	console.log(string8)

	//Line Break
	var string9='Vishal Kumar \n Delhi';
	console.log(string9);

	//Using Single Quote in string
	var string10='Vishal Kumar \n Delhi \n Father \'s Name : FF';
	console.log(string10);

	//Using Double Quote in string
	var string10="Vishal Kumar \n Delhi \n Father \"s Name : FF";
	console.log(string10);

	//Adding Error in JS
	//var;

	//Integer Addition Example
	var num3=prompt("Input Num 1");
	var num4=prompt("Input Num 2");
	var num5=parseInt(num4)+parseInt(num3);
	console.log("Sum of Num1 + Num 2 is : "+num5);

	//Float Addition Example
	var num6=prompt("Input Num 1");
	var num7=prompt("Input Num 2");
	var num8=parseFloat(num6)+parseFloat(num7);
	console.log("Sum of Num1 + Num 2 is : "+num8);

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Thursday, July 9, 2020

JavaScript Complete Basics Tutorial Part 2 | Variables | Constants | Console | String | Int | Float

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Post a Comment

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Author Details

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