jQuery ContextMenu事件在IOS 8.2中不起作用 [英] jQuery ContextMenu event not working in IOS 8.2
问题描述
我在.html示例中使用contextMenu事件，当我长按DIV时将触发该事件，但现在它不起作用.在最新的IOS 8.2版本中有问题.这是示例代码，
I am using contextMenu event in .html sample, it will be fired when i long press on an DIV, but right now it is not working. Is something broken in latest IOS 8.2 version. Here is the sample code,
<head>
<title></title>
<script src="Scripts/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#content").on("contextmenu", function () {
alert("CM");
});
});
</script>
</head>
<body>
<div id="content" style="height:300px; width:300px; background-color:gray;"></div>
</body>
这是工作示例
请有人帮我解决这个问题.
Please someone help me with this.
推荐答案
基本上，在iOS上，触摸事件不会被模拟为鼠标事件. 改用触摸事件:"touchstart"，"touchmove"和"touchend".
Basically, on iOS, touch events are not emulated as mouse events. Use touch events instead: "touchstart", "touchmove" and "touchend".
在您的情况下，在iOS上(与Android相反)，长时间触摸屏幕时不会触发"contextmenu". 要在iOS上自定义长按，您应使用类似以下内容的
In your case, on iOS and contrary to Android, "contextmenu" is not triggered when screen is long touched. To customize long touch on iOS you should use something like:
// Timer for long touch detection
var timerLongTouch;
// Long touch flag for preventing "normal touch event" trigger when long touch ends
var longTouch = false;
$(touchableElement)
.on("touchstart", function(event){
// Prevent default behavior
event.preventDefault();
// Test that the touch is correctly detected
alert("touchstart event");
// Timer for long touch detection
timerLongTouch = setTimeout(function() {
// Flag for preventing "normal touch event" trigger when touch ends.
longTouch = true;
// Test long touch detection (remove previous alert to test it correctly)
alert("long mousedown");
}, 1000);
})
.on("touchmove", function(event){
// Prevent default behavior
event.preventDefault();
// If timerLongTouch is still running, then this is not a long touch
// (there is a move) so stop the timer
clearTimeout(timerLongTouch);
if(longTouch){
longTouch = false;
// Do here stuff linked to longTouch move
} else {
// Do here stuff linked to "normal" touch move
}
})
.on("touchend", function(){
// Prevent default behavior
event.preventDefault();
// If timerLongTouch is still running, then this is not a long touch
// so stop the timer
clearTimeout(timerLongTouch);
if(longTouch){
longTouch = false;
// Do here stuff linked to long touch end
// (if different from stuff done on long touch detection)
} else {
// Do here stuff linked to "normal" touch move
}
});
这是一个页面，其中(其中包括)说明触摸事件不会在每个OS上都被模拟为鼠标事件: http://www.html5rocks.com/en/mobile/touchandmouse/
Here is a the page explaining (among other) that touch events are not emulated as mouse events on every OS: http://www.html5rocks.com/en/mobile/touchandmouse/
希望这会有所帮助，我花了很长时间才弄清楚；)
Hope this helps, it took to me a long time to figured it out ;)
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