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Hackathon Timer App / S3 Static Page App Deployment

Why?

As we got ready to kick start the Reinvent the wheel Hackathon, the team prepared everything from the challenge, eye masks, catering, playlist, networking, live leaderboard, and the whole nine yards. However, when the time came to display a 24 Hr count down timer in the big screen, We couldn't find a decent, minimal, clutter-free Count down timer in the web without ads.

Here is a straightforward HTML/CSS/JS code to build a minimal Count Down Timer. The app is deployed in AWS S3 bucket, and it is as simple as creating a static hosting bucket and uploading the index.html. You could quickly change the logo, color scheme, fonts to match your need and taste.

Link to the App : http://ravishankars.com/countdowntimer/

Setup Timer

Update Line 77

var countDownDate = new Date("Mar 27, 2020 17:00:00").getTime();

Clock Color

Update Line 54

.clock {
    transform: translateY(22vh);
    color: orangered;
    font-size: 4vh;
}

Logo/Heading Text

Update Line 68

<clock>
    <div>
        <p class="logo">Reinvent The Wheel 2.0</p>
        <p class="clock" id="timer"></p>
    </div>
</clock>

New Year 2020 Count Down Timer (Code Pen)

See the Pen New Year Count Down Timer by Ravishankar Sivasubramaniam (@ravishan16) on CodePen.

Deploy to AWS S3

  1. Create an S3 Bucket (URL will be http://.s3-website-.amazonaws.com/) and the bucket names should be globally unique

    Create Bucket

    Create Bucket

  2. Set Properties Static Web Hosting

    Set Index Document

  3. Set Permission - Bucket Policy and CORS

    Bucket Policy

     {
     "Version": "2012-10-17",
     "Statement": [
         {
             "Sid": "AddPerm",
             "Effect": "Allow",
             "Principal": "*",
             "Action": "s3:GetObject",
             "Resource": "arn:aws:s3:::<Bucket Name>/*"
         }
     ]
 }

    Bucket Policy

    CORS Configuration

     <?xml version="1.0" encoding="UTF-8"?>
 <CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
 <CORSRule>
     <AllowedOrigin>*</AllowedOrigin>
     <AllowedMethod>GET</AllowedMethod>
     <MaxAgeSeconds>3000</MaxAgeSeconds>
     <AllowedHeader>*</AllowedHeader>
 </CORSRule>
 </CORSConfiguration>

CORS Configuration

  1. Upload/Sync code to the bucker (Use awscli) 
     aws s3 cp index.html s3://hackathon-timer/

License

MIT