javascript在将id传递给函数时丢失id

javascript在将id传递给函数时丢失id,javascript,coldfusion,radio-button,Javascript,Coldfusion,Radio Button,在Coldfusion中,程序person1.cfm的代码如下: <form action = "person2.cfm" id = "pers2form" name = "pers2form" method = "post" onsubmit = "return pers1()"> <table> <td> <input type = "radio"

在Coldfusion中,程序person1.cfm的代码如下:

<form action = "person2.cfm"
  id       = "pers2form" 
  name     = "pers2form"
  method   = "post"      
  onsubmit = "return pers1()">
  <table>
      <td>
        <input type = "radio"  
          class = "moxradio round"                   
          id    = "Person"
          name  = "whereto"                                                        
          value = "Person">
      </td>
      <td style = "color: ##946ca6"> Update Person</td>
    <tr>
    <td>
      <input type = "radio"
                class = "moxradio round"
                id    = "Persactiv"
                name  = "whereto" 
                value = "PersActiv">
    </td>
    <td style = "color: ##946ca6; ">Update Activity  </td>
  </table>
</form>
<input type  = "Submit"
  name  = "subpers2"
  id    = "subpers2" 
  class = "submitbut"
  style = "display: block; margin:10px auto 10px auto"
  value = "Submit">
<cfif IsDefined('form.whereto')>
   <cfset whereto = form.whereto> 
</cfif>

<cfinclude template = person1.cfm>
<cfoutput>
  <script>
   recheck('#whereto#')
   function recheck(target) {
      alert('target is ' + target);
      document.getElementById(target).checked = true;
   }
  </script>
</cfoutput>

更新人
更新活动
这工作正常,并正确提交给person2.cfm,其代码如下:

<form action = "person2.cfm"
  id       = "pers2form" 
  name     = "pers2form"
  method   = "post"      
  onsubmit = "return pers1()">
  <table>
      <td>
        <input type = "radio"  
          class = "moxradio round"                   
          id    = "Person"
          name  = "whereto"                                                        
          value = "Person">
      </td>
      <td style = "color: ##946ca6"> Update Person</td>
    <tr>
    <td>
      <input type = "radio"
                class = "moxradio round"
                id    = "Persactiv"
                name  = "whereto" 
                value = "PersActiv">
    </td>
    <td style = "color: ##946ca6; ">Update Activity  </td>
  </table>
</form>
<input type  = "Submit"
  name  = "subpers2"
  id    = "subpers2" 
  class = "submitbut"
  style = "display: block; margin:10px auto 10px auto"
  value = "Submit">
<cfif IsDefined('form.whereto')>
   <cfset whereto = form.whereto> 
</cfif>

<cfinclude template = person1.cfm>
<cfoutput>
  <script>
   recheck('#whereto#')
   function recheck(target) {
      alert('target is ' + target);
      document.getElementById(target).checked = true;
   }
  </script>
</cfoutput>

重新检查(“#去哪里#”)
功能复查(目标){
警报(“目标是”+目标);
document.getElementById(target).checked=true;
}
这应该是把支票放回person1的无线电信箱。但事实并非如此。我在控制台上收到此错误:
TypeError:document.getElementById(…)为空[Learn More]person2.cfm:393:1

功能重新检查正在选择正确的目标。既然person1.cfm已经包含在内,那个目标应该就在那个里。但它似乎找不到它

其余的person2.cfm显示正确

对第393行的引用是虚假的,因为没有第393行。空值必须出现在函数“重新检查”中。我到处都做过这样的事情,把值放回输入字段和选择框,一切都正常。但我从来没有用单选按钮做过。也许重新检查一个盒子有什么不同?或者我做了一些我看不见的蠢事


有人能发现我做错了什么吗?

第二个单选按钮的id是“peractiv”,但您发送的值是“peractiv”。区分大小写的结果是
getElementById()
找不到id。

运行此操作时,“目标是”之后的警报对话框中会打印什么?Where to的值是多少?也许作为输出,您还需要确保在运行recheck()之前加载了页面。警报对话框似乎是正确的——如果不是,那么答案应该是正确的。然而,再次问我,我就遇到了问题——在person1.cfm中,我在第二个按钮中错误地输入了PersActiv的id。所以这毕竟是一个愚蠢的错误。是的,这确实是问题所在。你自己的代码很难校对,我很感激你为我发现了这个小问题。