simpy02 / javascript_basics

JAVASCRIPT_Basics

Exercise1:Write a JavaScript program to display the current day and time in the following format. Sample Output : Today is : Tuesday. Current time is : 10 PM : 30 : 38

Code:const readline=require('readline-sync');

var date=new Date(); var day=date.getDay(); var daylist=["Sunday","Monday","Tuesday","Thursday","Friday","Saturday"]

var hour= date.getHours(); var min=date.getMinutes(); var sec=date.getSeconds(); var ampm=hour >= 12? 'PM':'AM'; hour=hour>=12?hour-12:hour;

if(hour===0 && min==='PM'){ if(min===0 && sec===0){ hour=12; ampm='noon' } else{ hour=00; ampm="AM"; } }

console.log("Today is:"+daylist[day]); console.log("Current Time: "+ hour + ampm + " : " +min+" : "+sec);

Exercise2:Write a JavaScript program to print the contents of the current window

Code

<title>Print the content of current page</title> <script type="text/javascript"> function printContent(){ window.print(); }

</script>

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========================================================================= Write a JavaScript program to get the current date.

code: const readline=require('readline-sync'); function dateFormate(){ var date=new Date(); var year=date.getFullYear(); var mon=(1+date.getMonth()).toString().padStart(2,'0'); var day=date.getDate(); day=day>=10? day.toString().padStart(2,'0'):day;

return(day+" / "+mon+" / "+year); };console.log(dateFormate());

Exercise 4 :Write a JavaScript program to find the area of a triangle where lengths of the three of its sides are 5, 6, 7

Code:const readline=require('readline-sync'); function areaTriangle(a,b,c) { //area of triangle with 3 sides=square root of(s(s-a)(s-b)(s-c)) where s=(a+b+c)/2 var area; var s=(a+b+c)/2; return area=Math.sqrt(s*(s-a)(s-b)(s-c));

} console.log(areaTriangle(5,6,7));