Jquery mobile jquery Mobile中的货币转换器

我正在JQuery Mobile的帮助下制作一个android应用程序。在这些应用程序中，我想将货币转换为用户想要的货币。它应该全局检查，wht是当时和当天的货币汇率

在HTML5中：-

 <label for="amount">Convert this amount:</label>
    <input type="text" name="amount" id="amount" value="" />
 <div class="data">
    <label for="fromCurrency">From this currency:</label>
    <select name="fromCurrency" id="fromCurrency">
      <option selected="" value="EUR">Euro - EUR</option>
      <option value="USD">United States Dollars - USD</option>
      <option value="GBP">United Kingdom Pounds - GBP</option>
      <option value="CAD">Canada Dollars - CAD</option>
      <option value="AUD">Australia Dollars - AUD</option>
      <option value="JPY">India Rupees - JPY</option>
    </select>
</div>
<div class="data">
    <label for="toCurrency">To this currency:</label>
    <select name="toCurrency" id="toCurrency">
      <option value="USD">United States Dollars - USD</option>
      <option value="GBP">United Kingdom Pounds - GBP</option>
      <option value="CAD">Canada Dollars - CAD</option>
      <option value="AUD">Australia Dollars - AUD</option>
      <option value="JPY">Japan Yen - JPY</option>
      <option value="INR">India Rupees - INR</option>
    </select>
</div>

    <input type="button" name="convert" id="convert" value="Convert" />

    <div id="results"></div>

我在这里犯了什么错？它不会来的

请帮帮我

在head标签中，我使用了以下脚本

  <meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.css" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.js"></script>
 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

---

工作代码如下：

 $('#convert').click(function(){
         var amount = $('#amount').val();
         var from = $('#fromCurrency').val();

         var to = $('#toCurrency').val();
         var dataString = from + "&to=" + to + "&q=" + amount;

         $.ajax({
            type: "POST",
            crossDomain: true,
            dataType: 'jsonp',
            contentType: "application/json; charset=utf-8",   
            url: "http://rate-exchange.appspot.com/currency?from=" + dataString,
            success: function(data){
              alert(JSON.stringify(data));
              $('#results').show();
              $('#results').html(data.v);
            },error: function(xhr, status, error) {
              alert(xhr.responseText);
            }
        });
    }); 

---

@控制台中的Sheetal显示原点null是访问控制不允许的允许原点。@Sheetal在托管后没有错误显示此

“http://www.google.com/ig/calculator?hl=en&q=“+金额+从+”=？”+若有其他进程，请帮助我，还有一件事是在php中运行f9，但我需要它jquery@TryingTobemyself显示XMLHttpRequest无法加载。访问控制允许原点不允许原点为null。控制台中的错误wht将是日期：datestring或其他内容请检查我在标题标记中使用的wht脚本KK我必须创建自己的Restful json web服务KKK我将尝试如果成功，我将在FBI中通知你请帮助我我在openexchangerate.org中生成应用程序id，然后我将如何在中实现它剧本
 $('#convert').click(function(){
         var amount = $('#amount').val();
         var from = $('#fromCurrency').val();

         var to = $('#toCurrency').val();
         var dataString = from + "&to=" + to + "&q=" + amount;

         $.ajax({
            type: "POST",
            crossDomain: true,
            dataType: 'jsonp',
            contentType: "application/json; charset=utf-8",   
            url: "http://rate-exchange.appspot.com/currency?from=" + dataString,
            success: function(data){
              alert(JSON.stringify(data));
              $('#results').show();
              $('#results').html(data.v);
            },error: function(xhr, status, error) {
              alert(xhr.responseText);
            }
        });
    });