计算百分比Javascript [英] Calculate percentage Javascript

问题描述

我有一个关于 javascript 逻辑的问题，我用什么来从我的文本字段中获取两个输入的百分比.这是我的代码:

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);

出于某种原因，如果我的输入是 600 和 200，我的结果应该是 33.333，但我得到的是 3.333.如果我对我的值进行硬编码，这可以正常工作.如果有人可以帮助我很感激.提前致谢.

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.

推荐答案

似乎有效:

HTML:

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

JavaScript:

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);
    }

});

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

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