Javascript子类别-3层

Question

我是编程新手，所以如果有更好的方法可以做到这一点，我将非常感谢您的建议。 我已经搜索了许多小时，但是找不到列表中的第三项取决于前两项的解决方案。

我的目标是使OS选项取决于前两个选择（网络和资源）。 有2个网络-内部网络和防火墙，如果需要，服务器也可以集群。 如果选择标准，则可以选择物理或虚拟。 如果选择了集群，则唯一的选择是物理。

我遇到问题的地方是操作系统的选择。 如果选择了防火墙和虚拟的组合，则仅Linux和Windows可用。 如果选择了防火墙和物理的组合，则允许使用AIX，Solaris，Windows和Linux。 当我单击资源以将其更改为物理资源时，我希望更改操作系统选择。

HTML代码

<div class="left_box">
    <body onload="fillCategory();">
<div id ="formWrapper">
<FORM name="drop_list" action="availability.php" method="POST" >
<fieldset>
<label>Network</label>
<SELECT class= "formSelect" NAME="build" onChange="SelectSubCat();" >       
<Option value="">Select Internal or Firewall</option>
</SELECT>
<br>
<br>
<label>Resource</label>
<SELECT class= "formSelect" id="resource" NAME="resource">
<Option value="">Resource</option>
</SELECT>
<br>
<br>
<label>OS</label>
<SELECT class= "formSelect" id="OS" NAME="OS">      
<Option value="">OS</option>
</SELECT>
<br>
<br>
</fieldset>

JavaScript代码

function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.build, "Internal", "Internal", "");
addOption(document.drop_list.build, "Internal Cluster", "Internal Cluster", "");
addOption(document.drop_list.build, "Firewall", "Firewall", "");
addOption(document.drop_list.build, "Firewall Cluster", "Firewall Cluster", "");
}

function SelectSubCat(){
// ON selection of category this function will work
removeAllOptions(document.drop_list.resource);
removeAllOptions(document.drop_list.OS);

if((document.drop_list.build.value == 'Internal')||(document.drop_list.build.value == 'Firewall')){
addOption(document.drop_list.resource,"Virtual", "Virtual","");
addOption(document.drop_list.resource,"Physical", "Physical","");
}

if((document.drop_list.build.value == 'Internal Cluster') || (document.drop_list.build.value     == 'Firewall Cluster')) {
addOption(document.drop_list.resource,"Physical", "Physical");
}

if(document.drop_list.build.value == 'Internal') {
addOption(document.drop_list.OS,"AIX 6.1", "AIX 6.1");
addOption(document.drop_list.OS,"Linux 5.0 (64-bit)", "Linux 5.0 (64-bit)");
addOption(document.drop_list.OS,"Linux 6.0 (64-bit)", "Linux 6.0 (64-bit)");
addOption(document.drop_list.OS,"Solaris 10", "Solaris 10");
addOption(document.drop_list.OS,"Windows 2008 (64-bit) Standard", "Windows 2008 (64-bit) Standard");
addOption(document.drop_list.OS,"Windows 2008 (64-bit) Enterprise", "Windows 2008 (64-bit)   Enterprise");
addOption(document.drop_list.OS,"Windows 2008 R2 (64-bit) Standard", "Windows 2008 R2 (64-bit)  Standard");
addOption(document.drop_list.OS,"Windows 2008 R2 (64-bit) Enterprise", "Windows 2008 R2 (64-bit) Enterprise");
addOption(document.drop_list.OS,"Special", "Special");
}

if((document.drop_list.build.value == 'Internal Cluster') ||(document.drop_list.build.value == 'Firewall Cluster')){
addOption(document.drop_list.OS,"AIX 6.1", "AIX 6.1");
addOption(document.drop_list.OS,"Linux 5.0 (64-bit)", "Linux 5.0 (64-bit)");
addOption(document.drop_list.OS,"Linux 6.0 (64-bit)", "Linux 6.0 (64-bit)");
addOption(document.drop_list.OS,"Solaris 10", "Solaris 10");
addOption(document.drop_list.OS,"Windows 2008 (64-bit) Enterprise", "Windows 2008 (64-bit) Enterprise");
addOption(document.drop_list.OS,"Windows 2008 R2 (64-bit) Enterprise", "Windows 2008 R2 (64-bit) Enterprise");
}

if((document.drop_list.build.value == 'Firewall') && (document.drop_list.resource.value == 'Virtual')) {
addOption(document.drop_list.OS,"Linux 5.0 (64-bit)", "Linux 5.0 (64-bit)");
addOption(document.drop_list.OS,"Linux 6.0 (64-bit)", "Linux 6.0 (64-bit)");
addOption(document.drop_list.OS,"Windows 2008 (64-bit) Enterprise", "Windows 2008 (64-bit) Enterprise");
addOption(document.drop_list.OS,"Windows 2008 R2 (64-bit) Enterprise", "Windows 2008 R2 (64-bit) Enterprise");
}

if((document.drop_list.build.value == 'Firewall') && (document.drop_list.resource.value == 'Physical')) {
addOption(document.drop_list.OS,"AIX 6.1", "AIX 6.1");
addOption(document.drop_list.OS,"Linux 5.0 (64-bit)", "Linux 5.0 (64-bit)");
addOption(document.drop_list.OS,"Linux 6.0 (64-bit)", "Linux 6.0 (64-bit)");
addOption(document.drop_list.OS,"Solaris 10", "Solaris 10");
addOption(document.drop_list.OS,"Windows 2008 (64-bit) Enterprise", "Windows 2008 (64-bit) Enterprise");
addOption(document.drop_list.OS,"Windows 2008 R2 (64-bit) Enterprise", "Windows 2008 R2 (64-bit) Enterprise");
}

} 

////////////////// 

function removeAllOptions(selectbox)
{
    var i;
    for(i=selectbox.options.length-1;i>=0;i--)
{
    //selectbox.options.remove(i);
    selectbox.remove(i);
}
} 


function addOption(selectbox, value, text )
{
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;

selectbox.options.add(optn);
}

Answer 1

将创建OS选项的代码部分移至另一个功能。 在原始函数的末尾调用它。 在资源更改时调用新函数。

喜欢：

function selectResource(){
  ...
  selectOS();

}
function selectOS()...

http://jsfiddle.net/7ey8E/1/

Javascript子类别-3层

问题描述

1 个解决方案

解决方案1
2 2012-11-16 18:51:27

Javascript子类别-3层

问题描述

1 个解决方案

解决方案1 2 2012-11-16 18:51:27

解决方案1
2 2012-11-16 18:51:27