JAVA SCRIPT(DAY5) JAVA SCRIPT SECOND VIDEO

TEST.HTML

 <!DOCTYPE html>

<html>

<head>

<title></title>

<script type="text/javascript">

//it is valid only for 10 days


</script>

</head>

<body>


<p id="th"></p>

</body>


<script src="test.js"></script>

</html>



TEST.JS



This is a multiline comment

Author : Harry


document.write("This is an external js2");

document.getElementById('th').innerHTML = "This is a para";


var a1 = 45;

var a11=5;

var a2 = "This is me";

document.write(a1+a11,"<br>");

document.write(a1, a11,"<br>");

console.log("This is console");

console.log is used for debugging purposes


var age = prompt("Tell me your age");

alert("Your age is ", age);


document.write("5 + 9 = ", 5+9,"<br>");

document.write("5 - 9 = ", 5-9,"<br>");

document.write("5 * 9 = ", 5*9,"<br>");

document.write("5 / 9 = ", 5/9,"<br>");

document.write("5 % 9 = ", 5%9,"<br>");


var foodcost = prompt("What is the total amount");

var no = prompt("No of people");

document.write("The total cost of food was ", foodcost, "<br>");

document.write("Each one of you has to pay ", (foodcost/no).toFixed(2),"<br>");



*

document.write("2^9 = ", Math.pow(2,9),"<br>" );

document.write("abs(-34) = ", Math.abs(-34),"<br>");

document.write("sqrt(36) = ", Math.sqrt(36),"<br>");



String Functions


var str1 = "CodeWithHarry";

document.write(str1.length,"<br>" );

document.write(str1.indexOf("With"),"<br>" );

document.write(str1.toLowerCase(),"<br>" );




Relational Operators : ==, !=, <, >, >=

Logical Operators : &&, ||


var age = prompt("What is your age");


if (age<20 && age>=10)

{


document.write("You go to the school");

}


else if(age<10 && age>3)

{

document.write("You also go to the school");

}


else

{

document.write("Do whatever you want");

}




var age = prompt("What is your age?");

switch(age)

{


case "22":

document.write("22 years old.. okay");

break;


case "21":

document.write("21 years old.. okay");

break;


case "12":

document.write("12 years old.. okay");

break;


default:

document.write("default years old.. okay");

break;


}



var i =1;

while(i<=100)

{

document.write(i,"<br>");

i++;

}



var i =101;

do

{

document.write(i,"<br>");

i++;

} while(i<=100)





for (var i = 0; i < 2; i++) {

document.write(i,"<br>");

}




var books = ["Harry potter", "ncert", "ctci", 65];


document.write(books[3]);




function harry(){


document.write("We are calling harry");

console.log("We have executed harry function");



}


harry();



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