HTML 选项卡未在 Web 表单中显示 (ASP.NET)

Question

我正在使用 html-tab 视图，其中选项卡被 CSS 隐藏，并且只有 JavaScript 函数可见。但它不适用于 ASP.NET 的网络表单。

它只是立即显示并在半秒内消失。

我从here复制过来的。

代码是：

<%@ Page Title="" Language="C#" MasterPageFile="~/MASTER/MASTER.Master" AutoEventWireup="true" CodeBehind="CREATE_USER.aspx.cs" Inherits="CRM_CAPSULE.MASTER.WebForm2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">


<style>
body {font-family: "Lato", sans-serif;}

/* Style the tab */
div.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons inside the tab */
div.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
}

/* Change background color of buttons on hover */
div.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
div.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    -webkit-animation: fadeEffect 1s;
    animation: fadeEffect 1s;
}

/* Fade in tabs */
@-webkit-keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
}

@keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
}
</style>



</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">


<h3>Fade in Tabs</h3>

<div id="tabs" class="tab">
  <button class="tablinks" onclick="openCity(event, 'London')">London</button>
  <button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
  <button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>

<div id="tabs">

<div id="London" class="tabcontent">
  <h3>London</h3>
  <p>London is the capital city of England.</p>
</div>

<div id="Paris" class="tabcontent">
  <h3>Paris</h3>
  <p>Paris is the capital of France.</p> 
</div>

<div id="Tokyo" class="tabcontent">
  <h3>Tokyo</h3>
  <p>Tokyo is the capital of Japan.</p>
</div>

</div>

<script>


    function openCity(evt, cityName) {
        var i, tabcontent, tablinks;
        tabcontent = document.getElementsByClassName("tabcontent");
        for (i = 0; i < tabcontent.length; i++) {
            tabcontent[i].style.display = "none";
        }
        tablinks = document.getElementsByClassName("tablinks");
        for (i = 0; i < tablinks.length; i++) {
            tablinks[i].className = tablinks[i].className.replace(" active", "");
        }
        document.getElementById(cityName).style.display = "block";
        evt.currentTarget.className += " active";
    }



</script>

</asp:Content

Answer 1

您的 CSS 和 JavaScript 代码可以正常工作。

一个

<style>
body {font-family: "Lato", sans-serif;}

/* Style the tab */
div.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons inside the tab */
div.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
}

/* Change background color of buttons on hover */
div.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
div.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    -webkit-animation: fadeEffect 1s;
    animation: fadeEffect 1s;
}

/* Fade in tabs */
@-webkit-keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
}

@keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
}
</style>







<h3>Fade in Tabs</h3>

<div id="tabs" class="tab">
  <button class="tablinks" onclick="openCity(event, 'London')">London</button>
  <button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
  <button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>

<div id="tabs">

<div id="London" class="tabcontent">
  <h3>London</h3>
  <p>London is the capital city of England.</p>
</div>

<div id="Paris" class="tabcontent">
  <h3>Paris</h3>
  <p>Paris is the capital of France.</p> 
</div>

<div id="Tokyo" class="tabcontent">
  <h3>Tokyo</h3>
  <p>Tokyo is the capital of Japan.</p>
</div>

</div>

<script>


    function openCity(evt, cityName) {
        var i, tabcontent, tablinks;
        tabcontent = document.getElementsByClassName("tabcontent");
        for (i = 0; i < tabcontent.length; i++) {
            tabcontent[i].style.display = "none";
        }
        tablinks = document.getElementsByClassName("tablinks");
        for (i = 0; i < tablinks.length; i++) {
            tablinks[i].className = tablinks[i].className.replace(" active", "");
        }
        document.getElementById(cityName).style.display = "block";
        evt.currentTarget.className += " active";
    }

</script>


</script>

asp:Content 可能有问题...

从浏览器检查页面并确保您的 CSS 和 JS 代码在页面上的正确位置。

Answer 2

首先，将您的第二个 id="tabs" 替换为 class="tab"，因为您不能使用重复的 id。试试这个脚本。

var tabArea = ".tab .tablinks",
    tabContent = '.tabcontent';
$(tabArea).add(tabContent).each(function () {
    $(this).siblings(':first-child').addClass('active');
});
$(tabArea).on('click', function(){
    $(this).each(function(){
        var tabIndex = $(this).index();
        $(this).siblings().removeClass('active');
        $(this).parent('.tab').next(".tab")
            .find(tabContent).removeClass('active');
        $(this).addClass('active');
        $(this).parent('.tab').next(".tab")
            .find(tabContent).eq(tabIndex).addClass('active');
    })
}); 

还添加以下 CSS

.tabcontent.active { 
  display: block;
}

您可以参考这个 codepen 演示：https://codepen.io/kravisingh/pen/xrQqNO