Question

我从jsfiddle分叉了一些代码，当我将它放入html doc时，它无法正常工作。但在小提琴中工作得很好。有些东西告诉我，我错过了一个图书馆，但不知道应该使用哪一个。

如果它实际工作应该发生的是一个或两个文本框应该被禁用，然后如果选择了另一个单选按钮则启用。

任何帮助都将不胜感激。

<html>
<head>
<title> text conversion</title>
<script language="JavaScript">
var rbProject = document.getElementById('radio1-1');
var rbAccount = document.getElementById('radio1-2');
var txtRef = document.getElementById('txtRef');
var txtTitle = document.getElementById('txtTitle');
var txtName = document.getElementById('txtName');


rbProject.addEventListener('change', function (e) {
    txtRef.disabled = false;
    txtTitle.disabled = false;
    txtName.disabled = true;
})

rbAccount.addEventListener('change', function (e) {
    txtRef.disabled = true;
    txtTitle.disabled = true;
    txtName.disabled = false;
})
</script>
<style>
#container {
    width:700px;
    border-style:solid;
    border-width:2px;
}
.table {
    display:table;
    width: 650px;
    border-style:solid;
    border-width:1px;
}
.tr {
    display:table-row;
    height:28px;
}
.td {
    display:table-cell;
}
.td1 {
    width:200px;
}
.td2 {
    width:130px;
}
.td3 {
    width:400px;
}
</style>
</head>

<body>
<div class="table">
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-1" value="radio" />
            <label class="large black" for="radio1-1">Project</label>
        </div>
        <div class="td td2"> <span class="large black">Ref:</span> 
        </div>
        <div class="td td3">
            <input id="txtRef" class="form-textbox" name="ref" type="text" placeholder="Insert project reference" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1"></div>
        <div class="td td2"> <span class="large black">Title:</span> 
        </div>
        <div class="td td3">
            <input id="txtTitle" class="form-textbox" name="title" type="text" placeholder="Insert project title" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-2" value="radio" />
            <label class="large black" for="radio1-2">Account</label>
        </div>
        <div class="td td2"> <span class="large black">Name:</span> 
        </div>
        <div class="td td3">
            <input id="txtName" class="form-textbox" name="name" type="text" placeholder="Insert account name" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-3" value="radio" />
            <label class="large black" for="radio1-3">General Business</label>
        </div>
        <div class="td td2"></div>
        <div class="td td3">
            <input class="form-textbox" name="organization" type="text" placeholder="Insert client organisation name" />
        </div>
    </div>
</div>
</body>


</html>

Answer 1

在执行javascript之前，HTML没有呈现。在关闭body标签（</body>）之前放置脚本：

<html>
<head>
<title> text conversion</title>

<style>
#container {
    width:700px;
    border-style:solid;
    border-width:2px;
}
.table {
    display:table;
    width: 650px;
    border-style:solid;
    border-width:1px;
}
.tr {
    display:table-row;
    height:28px;
}
.td {
    display:table-cell;
}
.td1 {
    width:200px;
}
.td2 {
    width:130px;
}
.td3 {
    width:400px;
}
</style>
</head>

<body>
<div class="table">
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-1" value="radio" />
            <label class="large black" for="radio1-1">Project</label>
        </div>
        <div class="td td2"> <span class="large black">Ref:</span> 
        </div>
        <div class="td td3">
            <input id="txtRef" class="form-textbox" name="ref" type="text" placeholder="Insert project reference" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1"></div>
        <div class="td td2"> <span class="large black">Title:</span> 
        </div>
        <div class="td td3">
            <input id="txtTitle" class="form-textbox" name="title" type="text" placeholder="Insert project title" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-2" value="radio" />
            <label class="large black" for="radio1-2">Account</label>
        </div>
        <div class="td td2"> <span class="large black">Name:</span> 
        </div>
        <div class="td td3">
            <input id="txtName" class="form-textbox" name="name" type="text" placeholder="Insert account name" />
        </div>
    </div>
    <div class="tr">
        <div class="td td1">
            <input type="radio" name="section1a" id="radio1-3" value="radio" />
            <label class="large black" for="radio1-3">General Business</label>
        </div>
        <div class="td td2"></div>
        <div class="td td3">
            <input class="form-textbox" name="organization" type="text" placeholder="Insert client organisation name" />
        </div>
    </div>
</div>

<script>
var rbProject = document.getElementById('radio1-1');
var rbAccount = document.getElementById('radio1-2');
var txtRef = document.getElementById('txtRef');
var txtTitle = document.getElementById('txtTitle');
var txtName = document.getElementById('txtName');


rbProject.addEventListener('change', function (e) {
    txtRef.disabled = false;
    txtTitle.disabled = false;
    txtName.disabled = true;
})

rbAccount.addEventListener('change', function (e) {
    txtRef.disabled = true;
    txtTitle.disabled = true;
    txtName.disabled = false;
})
</script>


</body>


</html>

Answer 2

好的，我明白了;）在jsfiddle中，边栏中有“onload”选项，导致代码在页面加载完成后执行。在您的代码中，您有不同的选择来实现这一目标。您可以将代码放在HTML文档的末尾（在正文之后）或（这是我最喜欢的方法）将代码包装在函数中

function init() {
    //your JS code from above
}

使用

将这些添加到body标签中的onload侦听器

<body onload="init();">

我认为这应该有效，祝你好运:)。

Javascript无法正常工作，我无法弄明白为什么

2 个答案: