Javascript “意外”;“聚焦输出”;事件触发
我尝试在单击div(#CanvasArea)时显示文本框(#dimVal)。我想让这个文本框在失去焦点时消失Javascript “意外”;“聚焦输出”;事件触发,javascript,jquery,Javascript,Jquery,我尝试在单击div(#CanvasArea)时显示文本框(#dimVal)。我想让这个文本框在失去焦点时消失 <head> <script src="jquery-1.5.1.js" type="text/javascript"></script> </head> <body> <div id = "CanvasArea", style = "width:50%; height:600px
<head>
<script src="jquery-1.5.1.js" type="text/javascript"></script>
</head>
<body>
<div id = "CanvasArea", style = "width:50%; height:600px; border:2px; border-color:orange; border-style:solid; float:left">
<h3>Click Me</h3>
</div>
<input type="text", id="dimVal", value="111", style="position:absolute; display:none; left:300px; top:300px" />
<script type="text/javascript">
onMouseDown = function(e){
$("#dimVal").show();
$("#dimVal").focus();
$("#dimVal").focusout(onLostFocus);
}
onLostFocus = function(e){
$("#dimVal").hide();
$("#dimVal").unbind("focusout");
}
$("#CanvasArea").bind("mousedown", onMouseDown);
</script>
</body>
点击我
onMouseDown=函数(e){
$(“#dimVal”).show();
$(“#dimVal”).focus();
$(“#dimVal”).focusout(onLostFocus);
}
onLostFocus=函数(e){
$(“#dimVal”).hide();
$(“#dimVal”).unbind(“focusout”);
}
$(“#CanvasArea”).bind(“mousedown”,onMouseDown);
我想知道为什么鼠标单击后立即触发“focusout”事件?这是因为当您将焦点交给
dimVal
时,您的鼠标位于CanvasArea
上方,因此dimVal
在获得后立即失去焦点 将mousedown
更改为click
事件,因为在click
事件触发之前eventmousedown
事件触发,然后执行将焦点设置到文本框的代码,触发click
事件后焦点丢失,因此触发focusout
事件。也可以使用匿名函数,而不是全局函数。试试这个
$("#CanvasArea").bind("click", function(e){
$("#dimVal").focusout(function(e){
$(this).hide().unbind("focusout");
}).show().focus();
});
我无法使您的代码以当前形式工作,因此我使用jQuery mouseup函数和最新版本的jQuery重写了代码:
$(document).ready(function() {
$("#CanvasArea").mouseup(function() {
$("#dimVal").show();
$("#dimVal").focus();
$("#dimVal").focusout(onLostFocus);
});
onLostFocus = function(e){
$("#dimVal").hide();
$("#dimVal").unbind("focusout");
}
});
这可以按预期工作,在单击画布区域时显示,在用户单击表单时删除焦点。看来,我找到了解决方案。只需替换$(“#CanvasArea”).bind(“mousedown”,onMouseDown);美元(“#CanvasArea”).bind(“mouseup”,onMouseDown);