jQuery-UI约束：“父级”不起作用
[英]JQuery-UI containment: 'parent' does not work
问题描述
如您在此处看到的，具有类.foo的div是可拖动的并且具有containment：'parent'选项，因此它必须位于其父div（即mainDiv）的范围内，但不是。 这是为什么？
$(document).ready(function () { $('#deviceName li').draggable({ helper: 'clone', revert: 'invalid' }); $('#interface li').draggable({ helper: 'clone', revert: 'invalid' }); $('#display li').draggable({ helper: 'clone', revert: 'invalid' }); $('#output li').draggable({ helper: 'clone', revert: 'invalid' }); $('.foo').each(function(){ $(this).draggable({ containment: $(this).parent() }); }); $('#mainDiv').droppable({ drop: function (event, ui) { if(ui.draggable.hasClass('foo')){ } else { var title = ui.draggable.text().trim(); var item = $('<div class="foo">').append('<table class="elementTable"><tr><th class="thClass">' + title + '</th></tr></table>'); item.draggable(); $(this).append(item); } } }); });
html{ margin: 0; padding: 0; width: 100%; height: 100%; background: #2c2c2c; background: url(data:image/svg+xml;base64,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); background: -moz-linear-gradient(left, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); background: -webkit-gradient(linear, left top, right top, color-stop(0%,#2c2c2c), color-stop(37%,#3d3d3d), color-stop(66%,#353535), color-stop(66%,#353535), color-stop(100%,#131313)); background: -webkit-linear-gradient(left, #2c2c2c 0%,#3d3d3d 37%,#353535 66%,#353535 66%,#131313 100%); background: -o-linear-gradient(left, #2c2c2c 0%,#3d3d3d 37%,#353535 66%,#353535 66%,#131313 100%); background: -ms-linear-gradient(left, #2c2c2c 0%,#3d3d3d 37%,#353535 66%,#353535 66%,#131313 100%); background: linear-gradient(to right, #2c2c2c 0%,#3d3d3d 37%,#353535 66%,#353535 66%,#131313 100%); filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2c2c2c', endColorstr='#131313',GradientType=1 ); } body{ margin: 0; padding: 0; width: 100%; height: 100%; } #leftDiv{ display: inline-block; width: 16%; min-height: 100%; border-right: 3px solid white; box-sizing: border-box; float: left; margin: 0; padding: 5px; } #mainDiv{ display: inline-block; width: 64%; min-height: 100%; border-right: 3px solid white; box-sizing: border-box; float: left; margin: 0; padding: 5px; } #rightDiv{ display: inline-block; width: 20%; box-sizing: border-box; min-height: 100%; float: left; margin: 0; padding: 5px; } .foo{ max-width: 250px; text-align: center; min-height: 50px; border: 1px solid white; border-radius: 10px; } .foo table{ width: 100%; } .thClass{ border-radius: 10px; border-bottom: 1px solid white; margin: 0; padding: 0; width: 100%; text-align: center; }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Test</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/themes/overcast/jquery-ui.css" rel="stylesheet"/> <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script> </head> <body style="font-family: Arial; color: white;"> <div id="leftDiv"> <ul id="menu"> <li>Device Name <ul id="deviceName"> <li> item 1 </li> </ul> </li> <li>Interface <ul id="interface"> <li> item 2 </li> </ul> </li> <li>Display <ul id="display"> <li> item 3 </li> </ul> </li> <li>Output <ul id="output"> <li> item 4 </li> </ul> </li> </ul> </div> <div id="mainDiv"> </div> <div id="rightDiv"> </div> </body> </html>
如您在此处看到的，具有类.foo的div是可拖动的并且具有containment：'parent'选项，因此它必须位于其父div（即mainDiv）的范围内，但不是。 这是为什么？
1 个解决方案
解决方案1
2 已采纳 2017-11-02 08:34:31
请尝试以下操作：
$('.foo').each(function(){
$(this).draggable({
containment: $(this).parent()
});
});
原因是containment选项也可以是jQuery选择器或实际元素。
您可以在此演示中尝试
$('.foo').each(function() {
$(this).draggable({
containment: $(this).parent()
});
});
上面的代码在创建元素之前被调用。 因此，将它们包装在创建新对象时可以调用的函数中。
function foo(){
$('.foo').each(function() {
$(this).draggable({
containment: $(this).parent()
});
});
}
工作片段
$(document).ready(function() { $('#deviceName li').draggable({ helper: 'clone', revert: 'invalid' }); $('#interface li').draggable({ helper: 'clone', revert: 'invalid' }); $('#display li').draggable({ helper: 'clone', revert: 'invalid' }); $('#output li').draggable({ helper: 'clone', revert: 'invalid' }); function foo(){ $('.foo').each(function() { $(this).draggable({ containment: $(this).parent() }); }); } $('#mainDiv').droppable({ drop: function(event, ui) { if (ui.draggable.hasClass('foo')) { } else { var title = ui.draggable.text().trim(); var item = $('<div class="foo">').append('<table class="elementTable"><tr><th class="thClass">' + title + '</th></tr></table>'); item.draggable(); $(this).append(item); foo() } } }); });
html { margin: 0; padding: 0; width: 100%; height: 100%; background: #2c2c2c; background: url(data:image/svg+xml;base64,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); background: -moz-linear-gradient(left, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); background: -webkit-gradient(linear, left top, right top, color-stop(0%, #2c2c2c), color-stop(37%, #3d3d3d), color-stop(66%, #353535), color-stop(66%, #353535), color-stop(100%, #131313)); background: -webkit-linear-gradient(left, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); background: -o-linear-gradient(left, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); background: -ms-linear-gradient(left, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); background: linear-gradient(to right, #2c2c2c 0%, #3d3d3d 37%, #353535 66%, #353535 66%, #131313 100%); filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2c2c2c', endColorstr='#131313', GradientType=1); } body { margin: 0; padding: 0; width: 100%; height: 100%; } #leftDiv { display: inline-block; width: 16%; min-height: 100%; border-right: 3px solid white; box-sizing: border-box; float: left; margin: 0; padding: 5px; } #mainDiv { display: inline-block; width: 64%; min-height: 100%; border-right: 3px solid white; box-sizing: border-box; float: left; margin: 0; padding: 5px; } #rightDiv { display: inline-block; width: 20%; box-sizing: border-box; min-height: 100%; float: left; margin: 0; padding: 5px; } .foo { max-width: 250px; text-align: center; min-height: 50px; border: 1px solid white; border-radius: 10px; } .foo table { width: 100%; } .thClass { border-radius: 10px; border-bottom: 1px solid white; margin: 0; padding: 0; width: 100%; text-align: center; }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Test</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/themes/overcast/jquery-ui.css" rel="stylesheet" /> <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script> </head> <body style="font-family: Arial; color: white;"> <div id="leftDiv"> <ul id="menu"> <li>Device Name <ul id="deviceName"> <li> item 1 </li> </ul> </li> <li>Interface <ul id="interface"> <li> item 2 </li> </ul> </li> <li>Display <ul id="display"> <li> item 3 </li> </ul> </li> <li>Output <ul id="output"> <li> item 4 </li> </ul> </li> </ul> </div> <div id="mainDiv"> </div> <div id="rightDiv"> </div> </body> </html>
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