我目前有一些构建输出的ASP.Net代码，然后通过字符串文字显示它。我们的想法是，对于每个Receipt，都会有一个“查看更多”按钮，用于切换display: none;开头的额外信息。我尝试使用eq()方法尝试找到我要切换的那个，因为我在ul内执行此操作。我目前的代码是：
$("#btn-expand").click(function () {
var ldx = $("#list li .active").index(); // Get the list number so we know what ID to work with
var idx = $("#expand").next().index(); // Get the next ID index point
// Check that it isn't going negative
if (idx == -1 || ldx == -1) {
// If it is, reset ldx
ldx = 0;
idx = 0;
}
$("#expand").eq(ldx).toggle(); // Toggle that one
console.log(ldx);
});
第一个按钮工作正常，console.log显示0但是，所有其他按钮都没有显示任何内容。我的HTML示例如下所示：
<ul id="list">
<li class="active">
Something <br />
Something Again <br />
<span id="btn-expand">[View more]</span>
<div id="expand">
Something hidden
</div>
</li>
This <br />
Shows <br />
<span id="btn-expand">[View more]</span>
<div id="expand">
This is hidden until toggled
</div>
<li></li>
</ul>
li中有更多ul个元素，但这就是它的结构。我也在使用<span class="btn" id="btn-next">Next</span>遍历li中的每个ul，所以我真的很困惑为什么使用`#expand'执行此操作的方法不起作用。
如果有人能指出我正确的方向，我将不胜感激。感谢。
$(document).ready(function() {
$("#btn-next").click(function() {
var $list = $("#list li");
var idx = $(".active").removeClass("active").next().index();
if (idx == -1) {
idx = 0;
}
$list.eq(idx).addClass("active");
});
$("#btn-prev").click(function() {
var $list = $("#list li");
var idx = $(".active").removeClass("active").prev().index();
if (idx == -1) {
idx = 0;
}
$list.eq(idx).addClass("active");
});
$("#btn-expand").click(function() {
// Get the list number so we know what ID to work with
var ldx = $("#list li .active").index();
// Get the next ID index point
var idx = $("#expand").next().index();
// Check that it isn't going negative
if (idx == -1 || ldx == -1) {
// If it is, reset ldx
ldx = 0;
idx = 0;
}
// Toggle that one
$("#expand").eq(ldx).toggle();
console.log(ldx);
});
});#list {
list-style: none;
}
.active {
display: block;
}
#btn-expand {
cursor: pointer;
font-size: 9px;
margin-left: 10px;
}
#expand {
display: none;
}
li {
display: none;
}
.btn {
background: none;
padding: 10px;
border: 1px solid #000;
margin-left: 50px;
cursor: pointer;
}<script src="//code.jquery.com/jquery-1.12.0.min.js"></script>
<script src="//code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<ul id="list">
<li class="active">
Something here
<br />Something here again
<span id="btn-expand"> [View More] </span>
<br />
<br />
<span id="expand">
This is hidden, shh..
</span>
</li>
<li>
You can see this
<br />Toggling shouldn't effect me
<span id="btn-expand"> [View More] </span>
<br />
<br />
<span id="expand">
But toggling should effect me!
</span>
</li>
</ul>
<span class="btn" id="btn-prev">Prev</span> - <span class="btn" id="btn-next">Next</span>
答案 0 :(得分：5)
id在同一个文档中应该是唯一的，用通用类替换重复的文件，r.g：
<ul id="list">
<li class="active">
Something <br />
Something Again <br />
<span class="btn-expand">[View more]</span>
<div class="expand">
Something hidden
</div>
</li>
This <br />
Shows <br />
<span class="btn-expand">[View more]</span>
<div class="expand">
This is hidden until toggled
</div>
<li>
</li>
</ul>
然后通过类选择器#替换脚本中的id选择器.：
$(".btn-expand").click(function() {
// Get the list number so we know what ID to work with
var ldx = $("#list li .active").index();
// Get the next ID index point
var idx = $(".expand").next().index();
// Check that it isn't going negative
if (idx == -1 || ldx == -1) {
// If it is, reset ldx
ldx = 0;
idx = 0;
}
// Toggle that one
$(".expand").eq(ldx).toggle();
console.log(ldx);
});
您只能使用next()代替事件中的所有代码：
$(this).next(".expand").toggle();
//OR
$(this).next().toggle();
希望这有帮助。
$(".btn-expand").click(function() {
$(this).next(".expand").toggle();
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul id="list">
<li class="active">
Something <br />
Something Again <br />
<span class="btn-expand">[View more]</span>
<div class="expand">
Something hidden
</div>
</li>
<li>
This <br />
Shows <br />
<span class="btn-expand">[View more]</span>
<div class="expand">
This is hidden until toggled
</div>
</li>
</ul>
答案 1 :(得分：1)
将ID更改为类，然后您需要的是：
$(".btn-expand").click(function() {
$(this).next().toggle();
$(this).text(function(_, oldText){
return oldText.indexOf('More') === -1 ? 'View More' :'View Less';
})
});
答案 2 :(得分：1)
$(document).ready(function() {
$("#btn-next").click(function() {
var $list = $("#list li");
var idx = $(".active").removeClass("active").next().index();
if (idx == -1) {
idx = 0;
}
$list.eq(idx).addClass("active");
});
$("#btn-prev").click(function() {
var $list = $("#list li");
var idx = $(".active").removeClass("active").prev().index();
if (idx == -1) {
idx = 0;
}
$list.eq(idx).addClass("active");
});
$(".btn-expand").click(function() {
// Toggle
$(this).next().toggle();
});
});#list {
list-style: none;
}
.active {
display: block;
}
#btn-expand {
cursor: pointer;
font-size: 9px;
margin-left: 10px;
}
li {
display: none;
}
.btn {
background: none;
padding: 10px;
border: 1px solid #000;
margin-left: 50px;
cursor: pointer;
}
.expand-inner {
display:inline-block;
width:100%;
}<script src="//code.jquery.com/jquery-1.12.0.min.js"></script>
<script src="//code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<ul id="list">
<li class="active">
Something here
<br />Something here again
<span class="btn-expand"> [View More] </span>
<span style="display:none;">
<div class="expand-inner">This is hidden, shh..</div>
</span>
</li>
<li>
You can see this
<br />Toggling shouldn't effect me
<span class="btn-expand"> [View More] </span>
<span style="display:none;">
<div class="expand-inner">But toggling should effect me!</div>
</span>
</li>
</ul>
<span class="btn" id="btn-prev">Prev</span> - <span class="btn" id="btn-next">Next</span>