我有一个树形列表,用户可以在其中单击来打开或关闭分支。该树具有许多级别和子级别。我希望当用户单击“全部折叠”或“全部展开”按钮时,可以折叠所有分支(下降到第一级)或展开“ my-clickable”类的所有分支。
我可以关闭或打开各个分支。但是我无法一次全部打开或关闭它们。
这是我的jsfiddle:
https://jsfiddle.net/dyrh325f/65/
要注意的一件事是,在填充整个树的ajax调用之后,将使用Expand All按钮。我在ajax调用的“完成”部分中具有“全部扩展”代码,因此它适用于生成的html。
我希望用户在关闭一个或多个节点后能够将整个树扩展出来。我已经尝试了jsFiddle中的几种变体。似乎没有任何作用。我究竟做错了什么?
我是jQuery新手,非常感谢您!
码:
HTML:
展开树
<font face="calibri" size="3pt" >
<ul id="tree1" class="mytree">
<li id="theJob" class="my-clickable mytree liParOpen">My Job</li>
<ul id="treeList" class="mytree" name="treeList">
<li id='0' class='mytree child-click'>Batcher</li>
<li id='1' class='mytree child-click'>Retriever</li>
<li id='2' class='my-clickable mytree liParOpen'> TASK 2</li>
<ul class='mytree'>
<li id='2a' class='mytree child-click'>Prep1</li>
<li id='2b' class='mytree child-click'>Prep2</li>
<li id='2c' class='mytree my-clickable liParOpen'>PREP3</li>
<ul class='mytree'>
<li id='2b1' class='mytree child-click'>PREP3a</li>
<li id='2b2' class='mytree child-click'>PREP3b</li>
</ul>
</ul>
<li id='3' class='mytree child-click' > task 3</li>
<li id='4' class='my-clickable mytree liParOpen'> TASK 4</li>
<ul class='mytree'>
<li id='4a' class='mytree child-click'>Edit1</li>
<li id='4b' class='mytree child-click'>Edit2</li>
</ul>
<li id='5' class='my-clickable mytree liParOpen'> TASK 5</li>
<ul class='mytree'>
<li id='5a' class='mytree my-clickable liParOpen'>Del1</li>
<ul class='mytree'>
<li id='5a1' class='mytree child-click'>Del1a</li>
<li id='5a2' class='mytree child-click'>Del1b</li>
</ul>
<li id='5b' class='mytree child-click'>Del2</li>
</ul>
<li id='6' class='mytree child-click'>DocEjector-3</li>
</ul>
</ul>
</font>
jQuery:
$(document).ready(function(){
// expand button
$('#expandTree').on('click', function(event) {
var all = $('.my-clickable');
var closed = all.filter('.liParClosed');
closed.find("ul").each(function(){
$(this).next('ul').attr("class", "liParOpen");
$(this).nextAll('ul').toggle();
});
}); // end expand button
// collapse button
$('#collapseTree').on('click', function(event) {
var all = $('.my-clickable');
var open = all.filter('.liParOpen');
open.find("ul").each(function(){
$(this).next("ul").attr("class", "liParClosed");
$(this).nextAll('ul').slideToggle();
});
}); // end collapse button
// this is the top most level parents
$(".my-clickable").on('click', function(event) {
var taskId=$(this).closest("li").attr('id');
var tsk = '#'.concat(taskId);
if (taskId != "theJob") {
if ($(tsk).next('ul').length <= 0) {
$(tsk).toggleClass("liParOpen liParClosed");
$(tsk).next('ul').slideToggle();
}
else {
//$(event.target).find('ul').toggle();
$(tsk).toggleClass("liParOpen liParClosed");
$(tsk).children('li').slideToggle();
$(tsk).next('ul').slideToggle();
}
} // end if taskId != "theJob"
else {
$(tsk).toggleClass("liParOpen liParClosed");
$(tsk).slideToggle();
}
event.cancelBubble=true;
event.stopPropagation();
});
//2nd level parents
$(".my-clickable").on('click', ".my-clickable", function(event) {
var taskId=$(this).closest("li").attr('id');
var tsk = '#'.concat(taskId);
//$(event.target).find('ul').slideToggle();
$(tsk).toggleClass("liParOpen liParClosed");
//event.cancelBubble=true;
event.stopPropagation();
});
// first level child w/no children (parent=job)
$(".child-click").on('click', function(event) {
event.stopPropagation();
});
});
CSS:
ul.mytree li.liParClosed {
background-color: green;
fontWeight: normal;
}
ul.mytree li.liParOpen {
background-color: cyan;
fontWeight: normal;
}
.selected{
border: 3px solid yellow;
background-color: yellow;
fontWeight: bold;
}
ul.mytree liParOpen selected{
border: 3px solid red;
background-color: yellow;
fontWeight: bold;
}
ul.mytree li selected{
border: 3px solid red;
background-color: yellow;
fontWeight: bold;
}
ul.mytree li {
background-color: white;
fontWeight: normal;
}
ul.mytree {
background-color: white;
fontWeight: normal;
}
最佳答案
您几乎明白了,但是切换类“ liParClosed”和“ liParOpen”的操作不正确。
解决这个问题的方法很简单:
JS Fiddle
相关代码更改:
// expand button
$('#expandTree').on('click', function(event) {
var all = $('.my-clickable');
var closed = all.filter('.liParClosed');
closed.each(function(){
$(this).removeClass('liParClosed').addClass('liParOpen');
$(this).next('ul').slideToggle();
});
}); // end expand button
// collapse button
$('#collapseTree').on('click', function(event) {
var all = $('.my-clickable');
var open = all.filter('.liParOpen');
open.each(function(){
$(this).removeClass('liParOpen').addClass('liParClosed');
$(this).next('ul').slideToggle();
});
}); // end collapse button
查看添加/删除类的方式。还有,你当时
寻找open.find(“ ul”)但开放本身必须循环通过,因为它是开放li的列表。
希望这可以帮助。 :)
关于javascript - 展开全部/折叠所有列表,以防止类(class)失效,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/47273308/