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Javascript 复选框标记后，它将在另一个字段中提供美元金额

javascript

Javascript 复选框标记后，它将在另一个字段中提供美元金额,javascript,Javascript,我正在为一家详细公司创建一份车辆状况报告。在底部有带有详细信息包的复选框字段。在每个描述的末尾都有一个美元金额字段。我想做的是，如果勾选了复选框，它将在最后的字段中放置正确的美元金额 范例 （CB1）银色包装\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu （CB2）黄金包装\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

我正在为一家详细公司创建一份车辆状况报告。在底部有带有详细信息包的复选框字段。在每个描述的末尾都有一个美元金额字段。我想做的是，如果勾选了复选框，它将在最后的字段中放置正确的美元金额

范例

（CB1）银色包装
\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
（CB2）黄金包装
\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

我知道如何计算总金额，但我不能说如果勾选此框，则此字段将显示到期的美元金额


谢谢你
我觉得很简单。请检查这个


 <body>
 <script type="text/javascript">
 <!--
    function assignvalue(x, id, value)
    {
        if(x.checked)
            document.getElementById(id).value = "$" + value;
        else
            document.getElementById(id).value = "$";
    }
 //-->
 </script>
  <input type="checkbox" onclick="assignvalue(this, 'SilPack', '65.00')"><input type = "text" id = "SilPack">
  <input type="checkbox" onclick="assignvalue(this, 'GoldPack','85.00')"><input type = "text" id = "GoldPack">
 </body>






复选框具有选中属性，可以选中该属性，然后为相应的文本框指定适当的值