当我使用jQuery右键单击画布内的div时,如何触发事件

Question

当我使用jQuery右键单击画布内的div时,如何触发事件

更新:我已更新代码片段以包含Firebug中的整个页面.

我有以下代码:

<html><head>

<title>Welcome to CodeIgniter</title>

<!--[if IE]>
<script type="text/javascript" src="/assets/js/Jit/Extras/excanvas.js"></script>
<![endif]-->

<script src="/assets/js/jquery/jquery-1.4.2.min.js" type="text/javascript"></script>

<script src="/assets/js/Jit/jit.js" type="text/javascript"></script>
<script src="/assets/js/tree.js" type="text/javascript"></script>
<script src="/assets/js/jquery/jquery.rightClick.js" type="text/javascript"></script>


<script type="text/javascript">

    $(document).ready(function() {
        $(".node").rightClick(function() {
            alert ("RIGHT CLICK");
        });

        $.getJSON("/ajax/fetch/tree", function(data) {
            init(data);
        });
    });

    $(".node").live("click", function() {
        alert ($(this).attr("id"));
    });


</script>

<style type="text/css">
html, body {
    width:100%;
    height:100%;
    background-color:#444;
    text-align:center;
    overflow:hidden;
    font-size:9px;
    font-family:Verdana, Geneva, Arial, Helvetica, sans-serif;
    margin:0;padding:0;
}
/* visualization style container */
#infovis {
    background-color:#222;
    position:relative;
    width:900px;
    height:500px;
}

a, a:link, a:visited {
    color:#343439;
}
/* spacetree nodes CSS class */
.node {
    background-color:transparent;
    font-weight:bold;
    overflow:hidden;
    text-decoration:none;
    position:absolute;
    text-align:center;
    padding:4px 1px 1px 1px;
}

.node:hover {
    color:#393434;
    }

.hidden{
    display:none;
}
</style>
</head><body>

<div id="infovis">
    <div id="mycanvas" style="width: 900px; height: 500px; position: relative;">
        <canvas id="mycanvas-canvas" width="900" height="500" style="position: absolute; top: 0pt; left: 0pt; width: 900px; height: 500px;"></canvas>
        <div id="mycanvas-label" style="overflow: visible; position: absolute; top: 0pt; left: 0pt; width: 900px; height: 0pt;">
            <div id="1" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 200px; top: 265px;">0.0</div>
            <div id="4" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 420px; top: 215px;">2.0</div>
            <div id="5" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 420px; top: 240px;">2.1</div>
            <div id="9" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 420px; top: 265px;">2.2</div>
            <div id="10" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 420px; top: 290px;">2.3</div>
            <div id="2" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 310px; top: 253px;">1.0</div>
            <div id="6" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 640px; top: 275px; display: none;">3.0</div>
            <div id="3" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 310px; top: 278px;">1.1</div>
            <div id="8" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 530px; top: 228px;">5.0</div>
            <div id="11" class="node" style="position: absolute; width: 60px; height: 17px; cursor: pointer; color: rgb(51, 51, 51); font-size: 0.8em; text-align: center; padding-top: 3px; left: 530px; top: 253px;">5.1</div>
        </div>
    </div>
</div>
<div class="node">HELLO WORLD!</div>
</body></html>

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我希望能够使用"node"类右键单击其中一个div,然后触发一个事件.有没有办法用jQuery做到这一点？我查看了http://www.javascripttoolbox.com/lib/contextmenu/上的上下文菜单jQuery插件.但是,如果我使用$('node').contextMenu(...)它不起作用.如果我使用$('infovis').contextMenu(...),则上下文菜单可以正常工作.

看起来这些div实际上在画布之外.我直接从Firebug中提取了这段代码.

Answer 1

res*_*ion 6

试试这个:

$(document).ready(function(){ 
    $(document)[0].oncontextmenu = function() {return false;} 

    $("#infovis").delegate('.node','mousedown',function(e){ 
      if( e.button == 2 ) { 
         e.stopPropagation()
         alert('Right mouse button!'); 
         return false; 
       } else { 
         return true; 
        } 

    }); 
});

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我假设#infovis从一开始就可见,你使用javascript用.node div填充该div.因此,您希望使用事件委派,因此您不会绑定到每个节点,而是绑定父节点.这使得您的代码更快,即使您有1000个.nodes.此外,您不需要将绑定放在回调中.

如果按钮== 2(右键单击按钮),我们委托mousedown捕获事件.

您还可以通过停止contextmenu事件来禁用默认的右键单击行为.

如果这对您有用,请告诉我.

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