Bootstrap單選按鈕 - 使用jquery添加變量

Question

我使用Bootstrap構建了一個表單。用戶單擊一個單選按鈕並在頁面底部顯示一個數字。

<!-- FOOTER --> 
    <div class="container"> 
    <div class="row"> 
    <div class="col-lg-offset-3 col-xs-12 col-lg-6"> 
     <div class="jumbotron"> 
     <div class="row text-center"> 
      <div class="text-center col-xs-12 col-sm-12 col-md-12 col-lg-12"> 
      <h2>Broadband Speed Calculator</h2> 
      </div> 
      <div class="text-center col-lg-12"> 
      <!-- CONTACT FORM https://github.com/jonmbake/bootstrap3-contact-form --> 
       <form class="form-horizontal" role="form" method="post" action="" id="broadbandForm"> 

        <div class="form-group"> 
         <label for="video" class="col-xs-12 control-label text-left">Number of people who use streaming video (eg. Youtube or Netflix) on your network</label> 
         <div class="col-xs-12 btn-group" data-toggle="buttons"> 
          <label class="btn btn-primary active"><input class="BroadbandRadioClass" type="radio" name="videoStream" value="0" checked>0</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoStream" value="9">1</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoStream" value="18">2</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoStream" value="27">3</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoStream" value="36">4+</label> 
         </div> 
        </div>     

        <div class="form-group"> 
         <label for="videoChat" class="col-xs-12 control-label text-left">Number of people who use video chat (eg. Skype or Facetime) on your network</label> 
         <div class="col-xs-12 btn-group" data-toggle="buttons"> 
          <label class="btn btn-primary active"><input class="BroadbandRadioClass" type="radio" name="videoChat" value="0" checked>0</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoChat" value="9">1</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoChat" value="18">2</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoChat" value="27">3</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="videoChat" value="36">4+</label> 
         </div> 
        </div> 

        <div class="form-group"> 
         <label for="gaming" class="col-xs-12 control-label text-left">Number of people who use online gaming on your network</label> 
         <div class="col-xs-12 btn-group" data-toggle="buttons"> 
          <label class="btn btn-primary active"><input class="BroadbandRadioClass" type="radio" name="gaming" value="0" checked>0</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="gaming" value="5">1</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="gaming" value="10">2</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="gaming" value="15">3</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="gaming" value="20">4+</label> 
         </div> 
        </div>      

        <div class="form-group"> 
         <label for="audioStream" class="col-xs-12 control-label text-left">Number of people who use streaming audio on your network</label> 
         <div class="col-xs-12 btn-group" data-toggle="buttons"> 
          <label class="btn btn-primary active"><input class="BroadbandRadioClass" type="radio" name="audioStream" value="0" checked>0</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="audioStream" value=".32">1</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="audioStream" value=".64">2</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="audioStream" value=".96">3</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="audioStream" value="1.28">4+</label> 
         </div> 
        </div>  

        <div class="form-group"> 
         <label for="generalUse" class="col-xs-12 control-label text-left">Number of people who use the Internet for general use (shopping, banking, e-mail, social media, etc.) on your network</label> 
         <div class="col-xs-12 btn-group" data-toggle="buttons"> 
          <label class="btn btn-primary active"><input class="BroadbandRadioClass" type="radio" name="generalUse" value="0" checked>0</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="generalUse" value=".5">1</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="generalUse" value="1">2</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="generalUse" value="1.5">3</label> 
          <label class="btn btn-primary"><input class="BroadbandRadioClass" type="radio" name="generalUse" value="2">4+</label> 
         </div> 
        </div> 

        <div class="form-group"> 
         <div id="CalculationResult" class="col-sm-8 col-sm-offset-4"> 
         </div> 
        </div> 
       </form> 
      <!-- END CONTACT FORM --> 
      </div> 
     </div> 
     </div> 
    </div> 
    </div> 
</div> 
<!--/FOOTER --> 

我首先使用了下面的代碼，它工作正常，除了包含Bootstrap腳本時。然後它破裂。我知道這是因爲Bootstrap處理表單的方式。

$("input[type=radio]").click(function() { 
var Broadbandtotal = 0; 
$("input[type=radio]:checked").each(function() { 
    Broadbandtotal += parseFloat($(this).val()); 
}); 

$("#CalculationResult").html("You need at least " + Broadbandtotal); 
console.log(Broadbandtotal); 
}); 

這很好，除了我想使用Bootstrap。所以我換了幾件東西，最後得到了這個：

$(".btn").click(function() { 
var Broadbandtotal = 0; 
$(" .active input:radio").each(function() { 
    Broadbandtotal += parseFloat($(this).val()); 
}); 
$("#CalculationResult").html("You need at least " + Broadbandtotal); 
console.log(Broadbandtotal);  
}); 

這實際上工作，但有一個很奇怪的怪癖。你必須點擊2個按鈕才能在底部顯示數字（即點擊按鈕1，它會告訴你答案是「0」 - 點擊按鈕2，它會告訴你答案是「1」，這實際上是你應該做的通過點擊第一個按鈕。）

我在這裏錯過了什麼嗎？它看起來應該像第一個代碼一樣運行，這沒有問題。看起來好像是在代碼的其餘部分運行之後以某種方式添加變量，但我一直無法弄清楚這一點。控制檯也說了同樣的事情。提示需要拼命！謝謝...

小提琴：https://jsfiddle.net/99x50s2s/234/

Answer 1

我都做你的點擊事件到一個變化事件：

$("input[type=radio]").on('change',function() { 
    var Broadbandtotal = 0; 
    $("input[type=radio]:checked").each(function() { 
     Broadbandtotal += parseFloat($(this).val()); 
    }); 

    $("#CalculationResult").html("You need at least " + Broadbandtotal); 
    console.log(Broadbandtotal); 

    $(" .active input:radio").each(function() { 
     Broadbandtotal += parseFloat($(this).val()); 
    }); 

});