Javascript-单选按钮启用/禁用元素不正确

Question

因此，我试图基于编辑表单中选中的单选按钮来使能/禁用元素。

当我尝试运行代码并测试表单时，看起来有点可笑。 我不知道如何用语言解释它，但这是显示问题的GIF。 它没有正确启用和禁用元素。 看起来有点可笑。

我还希望元素保持启用状态，并在从数据库中检索值时基于选中的单选按钮禁用元素，但是它也不起作用

这是我的代码

<html>
    <head>
    <title> Submit a Contract </title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript">
function toggleAlert2() {
    toggleDisabled(document.getElementById("division"));
    document.getElementById("extText").disabled = false;
}
    function toggleDisabled(el) {
    try {
    el.disabled = el.disabled ? false : true;
    }
    catch(E){
    }
    if (el.childNodes && el.childNodes.length > 0) {
        for (var x = 0; x < el.childNodes.length; x++) {
        toggleDisabled(el.childNodes[x]);
        }
    }
}
function toggleAlert() {
    document.getElementById("extText").disabled = true;

}
</script>
</head>
<body>
    <form method="post" action="" enctype="multipart/form-data">
        ID: 50<br>
        <input type="hidden" name="id" value="50" />

        <label for = "client1">
        <input type="radio" name="client_type" id = "client1" value="Division" checked onclick="toggleAlert()"/> Division
        </label>
        &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp 
        <label for ="client2">
        <input type="radio" name="client_type" id = "client2" value="External"  onclick="toggleAlert2()"/> External
        </label>
        &nbsp 
        <input type="text" id="extText" name="client_details2" value="rrrrrr"/> 
        <br><br>

        <div id="division">
        Division:
        <select name="client_details">
            <option value="Choose"  />Choose Division...</option>
            <option value="Distribution"  />Distribution</option>
            <option value="Transmission"  />Transmission</option>
            <option value="Generation"  />Generation</option>
            <option value="Procument"  />Procument</option>
            <option value="Other"  />Others</option>
        </select>   
        <br><br>
        Others:<input type="text" name="client_details1" value="rrrrrr" />
        <br>
        </div>
        <br>
        <input type="submit" name="submit" value="Submit"/>
    </form>     
</body>

有什么方法可以修复我的代码？ 谢谢！

Answer 1

尝试重写它而不进行递归，使用querySelector（）禁用特定div类的try-catch和设置。 https://jsfiddle.net/Lsre6mfL/

你也可以折叠

var divis_el = document.getElementById("division");
for (var i = 0; i < divis_el.children.length; i++) {
    divis_el.children[i].disabled = true;
}

在功能上。

Answer 2

哇，看起来有多简单。

 function toggleAlert2() { document.getElementById("extText").disabled = false; document.getElementById("client_details").disabled = true; document.getElementById("client_details1").disabled = true; } function toggleAlert() { document.getElementById("extText").disabled = true; document.getElementById("client_details").disabled = false; document.getElementById("client_details1").disabled = false; }

  <form method="post" action="" enctype="multipart/form-data"> ID: 50<br> <input type="hidden" name="id" value="50" /> <label for = "client1"> <input type="radio" name="client_type" id = "client1" value="Division" checked onchange="toggleAlert()"/> Division </label> &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp <label for ="client2"> <input type="radio" name="client_type" id = "client2" value="External" onchange="toggleAlert2()"/> External </label> &nbsp <input type="text" id="extText" name="client_details2" value="rrrrrr"/> <br><br> <div id="division"> Division: <select id="client_details" name="client_details"> <option value="Choose" />Choose Division...</option> <option value="Distribution" />Distribution</option> <option value="Transmission" />Transmission</option> <option value="Generation" />Generation</option> <option value="Procument" />Procument</option> <option value="Other" />Others</option> </select> <br><br> Others:<input id="client_details1" type="text" name="client_details1" value="rrrrrr" /> <br> </div> <br> <input type="submit" name="submit" value="Submit"/> </form>

Javascript-单选按钮启用/禁用元素不正确

问题描述

2 个解决方案

解决方案1
1 已采纳 2017-03-23 05:21:48

解决方案2
0 2017-03-23 06:04:28

Javascript-单选按钮启用/禁用元素不正确

问题描述

2 个解决方案

解决方案1 1 已采纳 2017-03-23 05:21:48

解决方案2 0 2017-03-23 06:04:28

解决方案1
1 已采纳 2017-03-23 05:21:48

解决方案2
0 2017-03-23 06:04:28