Question

我遇到了Jquery UI问题 - 可排序组件。问题解释：

点击button1 - ＆gt;结果“警告”
拖动portlet包含button1到另一列，然后单击button1 - ＆gt;结果“alert”“alert”（由click函数表示的动作每个事件触发两次）

简单代码（来自Jquery UI网页的修改portlet示例）：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>jQuery UI Sortable - Portlets</title>
    <link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
    <script src="../../jquery-1.6.2.js"></script>
    <script src="../../ui/jquery.ui.core.js"></script>
    <script src="../../ui/jquery.ui.widget.js"></script>
    <script src="../../ui/jquery.ui.mouse.js"></script>
    <script src="../../ui/jquery.ui.sortable.js"></script>
    <script src="../../ui/jquery.ui.button.js"></script>
    <link rel="stylesheet" href="../demos.css">
    <style>
    .column { width: 170px; float: left; padding-bottom: 100px; }
    .portlet { margin: 0 1em 1em 0; }
    .portlet-header { margin: 0.3em; padding-bottom: 4px; padding-left: 0.2em; }
    .portlet-header .ui-icon { float: right; }
    .portlet-content { padding: 0.4em; }
    .ui-sortable-placeholder { border: 1px dotted black; visibility: visible !important; height: 50px !important; }
    .ui-sortable-placeholder * { visibility: hidden; }
    </style>
    <script>
    $(function() {
        $( ".column" ).sortable({
            connectWith: ".column"
        });

        $( ".portlet" ).addClass( "ui-widget ui-widget-content ui-helper-clearfix ui-corner-all" )
            .find( ".portlet-header" )
                .addClass( "ui-widget-header ui-corner-all" )
                .prepend( "<span class='ui-icon ui-icon-minusthick'></span>")
                .end()
            .find( ".portlet-content" );

        $( ".portlet-header .ui-icon" ).click(function() {
            $( this ).toggleClass( "ui-icon-minusthick" ).toggleClass( "ui-icon-plusthick" );
            $( this ).parents( ".portlet:first" ).find( ".portlet-content" ).toggle();
        });

        $( ".column" ).disableSelection();
    });
    </script>
</head>
<body>
<div class="demo">

<div class="column">

    <div class="portlet">
        <div class="portlet-header">Feeds</div>
        <div class="portlet-content">Lorem ipsum dolor sit amet, consectetuer adipiscing elit</div>
        <div>
            <div id="button1"></div>
        </div>
        <script>
                                $( "#button1" ).button({
                                    icons: {
                                        primary: "ui-icon-locked"
                                    },
                                    label: 'Button1'
                                }).click(function(){
                                    alert('Alert');
                                });
        </script>
    </div>

    <div class="portlet">
        <div class="portlet-header">News</div>
        <div class="portlet-content">Lorem ipsum dolor sit amet, consectetuer adipiscing elit</div>
    </div>

</div>

<div class="column">

    <div class="portlet">
        <div class="portlet-header">Shopping</div>
        <div class="portlet-content">Lorem ipsum dolor sit amet, consectetuer adipiscing elit</div>
    </div>

</div>

<div class="column">

    <div class="portlet">
        <div class="portlet-header">Links</div>
        <div class="portlet-content">Lorem ipsum dolor sit amet, consectetuer adipiscing elit</div>
    </div>

    <div class="portlet">
        <div class="portlet-header">Images</div>
        <div class="portlet-content">Lorem ipsum dolor sit amet, consectetuer adipiscing elit</div>
    </div>

</div>

</div><!-- End demo -->



<div class="demo-description">
<p>
    Enable portlets (styled divs) as sortables and use the <code>connectWith</code>
    option to allow sorting between columns.
</p>
</div><!-- End demo-description -->

</body>
</html>

Answer 1

问题是你将click函数绑定到portlet本身的html中的button1，所以它可能在jQuery UI克隆一个帮助对象时第二次执行。解决方案很简单，只需将Feeds portlet的script元素中的代码移动到页面头部的脚本部分（在函数体中，就像就绪处理程序执行的其他代码一样）。

Jquery UI - 可排序[Portlet] - 按钮双击

1 个答案: