javascript - Coldfusion 中的重定向——还是强制 Javascript？

Question

有谁知道如何在 Coldfusion 中进行类似于 JavaScript 中的重定向的重定向？我在 javascript 方面遇到的问题是人们只是关闭 javascript。另外是否可以写一些东西来强制他们保持 javascript 开启或让他们下载它(如果他们没有)？

<script language="javascript">
function SelectRedirect(){
// ON selection of section this function will work
//alert( document.getElementById('pcount').value);

switch(document.getElementById('pcount').value)
{
case "0":
alert('Please select number of owners.');
window.location="";
break;

case "1":
window.location="One/ownerInfo1.cfm";
break;

case "2":
window.location="Two/ownerInfo2.cfm";
break;

case "3":
window.location="Three/ownerInfo3.cfm";
break;

  case "4":
  window.location="Four/ownerInfo4.cfm";
break;

case "5":
window.location="Five/ownerInfo5.cfm";
break;

}// end of switch 
}
////////////////// 
</script>
</head>

<h3>How many owners are taking title?&nbsp;
<SELECT id="pcount" NAME="pcount">
<Option value="0">Select Section</option>
<Option value="1">1</option>
<Option value="2">2</option>
<Option value="3">3</option>
<Option value="4">4</option>
<Option value="5">5</option>
</SELECT></h3>


<input type="submit" name="Submit" value="Next" onClick="SelectRedirect();">

Answer 1

Also is it possible to write something to force them to either keep javascript on or make them download it if they do not have it?

不，这是不可能的，您唯一能做的就是在未检测到 JS 的情况下阻止输出，并在 <noscript> 中通知您的访问者。阻止，但我认为这是非常糟糕的做法。以一种可以同时使用 JS 和关闭 JS 的方式构建您的应用程序。

话虽这么说，你应该从无 JS 版本开始，不显眼地添加 JS 功能。例如。包裹<select>和<input type="submit">在 <form>其中action目标是服务器端操作，然后才添加 JS 作为性能增强器，但永远不要单独依赖 JS。

快速代码示例:

<cfif structKeyExists(url, 'pickPage') and structKeyExists(form, 'pcount')>
    <cfswitch expression=#form.pcount#>
        <cfcase value="0">
            <cfoutput>Error</cfoutput>
        </cfcase>
        <cfcase value="1">
            <cflocation url="One/ownerInfo1.cfm">
        </cfcase>
    </cfswitch>
</cfif>

<form action="?pickPage" method="post">
    <SELECT id="pcount" NAME="pcount">
    <Option value="0">Select Section</option>
    <Option value="1">1</option>
    </SELECT>
    <input type="submit" name="Submit" value="Next" onclick="SelectedRedirect(); return false;">
</form>

<script type="text/javascript">
function SelectRedirect() {
    switch (document.getElementById('pcount').value) {
        case "0":
            alert('Please select number of owners.');
            window.location = "";
            break;

        case "1":
            window.location = "One/ownerInfo1.cfm";
            break;

    }
}
</script>