Javascript Calculator Algorithm to calculate a tip percentage given the bill amount and total bill including...

Javascript Calculator

Algorithm to calculate a tip percentage given the bill amount and total bill including tip.

Asker suer for bill without tip:

Ask the user for total bill with tip:

Ask the user how many people splitting bill:

Submit button to calculate the tip percentage

Solutions

Expert Solution

HTML & Javascript:

<!DOCTYPE html>
<html>

   <head>
       <script type="text/javascript">

           //Function that calculates tip percentage
           function calculateTipPercentage() {
               //Reading input from user
               var billWithoutTip = parseFloat(document.getElementById("W_O_Tip").value);
               var billWithTip = parseFloat(document.getElementById("W_Tip").value);
               var numPeople = parseFloat(document.getElementById("numP").value);

               //Calculating tip amount
               var tipAmt = billWithTip - billWithoutTip;

               //Calculating tip percentage
               var tipPercentage = (billWithTip - billWithoutTip) / 100;

               //Writing result
               document.getElementById("Tip_Per").value = tipPercentage + "%";
           }

       </script>
   </head>

   <body>
       Enter total bill without tip: <input type="text" id="W_O_Tip"> </br></br>
       Enter total bill with tip: <input type="text" id="W_Tip"> </br></br>
       Enter number of people splitting the bill: <input type="text" id="numP"> </br></br>
       <input type="submit" value="Submit" onclick="calculateTipPercentage()"> </br></br>
       Tip Percentage: <input type="text" id="Tip_Per" readonly=true> </br></br>
   </body>

</html>

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Sample Run:

venereology answered 9 months ago

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