Calculate percentage Javascript

Question

I have a question about javascript logic what I use to get percent of two inputs from my text fields. Here is my code:

    var pPos = $('#pointspossible').val();     var pEarned = $('#pointsgiven').val();      var perc = ((pEarned/pPos) * 100).toFixed(3);     $('#pointsperc').val(perc); 

For some reason if my inputs are 600 and 200, my result suppose to be 33.333 but I'm getting 3.333. If I hard code my values this works fine. If anyone can help I appreciate that. Thanks in advance.

Answer 1

You can use this

function percentage(partialValue, totalValue) {    return (100 * partialValue) / totalValue; }  

Example to calculate the percentage of a course progress base in their activities.

const totalActivities = 10; const doneActivities = 2;  percentage(doneActivities, totalActivities) // Will return 20 that is 20% 

Answer 2

It seems working :

HTML :

 <input type='text' id="pointspossible"/> <input type='text' id="pointsgiven" /> <input type='text' id="pointsperc" disabled/> 

JavaScript :

    $(function(){      $('#pointspossible').on('input', function() {       calculate();     });     $('#pointsgiven').on('input', function() {      calculate();     });     function calculate(){         var pPos = parseInt($('#pointspossible').val());          var pEarned = parseInt($('#pointsgiven').val());         var perc="";         if(isNaN(pPos) || isNaN(pEarned)){             perc=" ";            }else{            perc = ((pEarned/pPos) * 100).toFixed(3);            }          $('#pointsperc').val(perc);     }  }); 

Demo : http://jsfiddle.net/vikashvverma/1khs8sj7/1/