[英].mouseup() and .mousedown() not working with .mousemove()
[英]How to listen to mousedown, mousemove and mouseup in a Backbonejs view method
我希望能够在Backbone视图内拖动div元素。 为此,我需要在Backbone View方法内监听这三个事件mouseup,mousedown,mousemove。
events: {
"mousedown .status .progress .seek-bar .seek-bar-grip": "slide",
"mouseup .status .progress .seek-bar .seek-bar-grip": "slide",
"mousemove .status .progress .seek-bar .seek-bar-grip": "slide",
},
slide: function(event) {
// Code about the drag here
},
这是行不通的,因为每次触发另一个事件时,它将再次调用该方法。 我的问题不是如何在javascript中拖动div元素,而是如何在slide方法中收听这3个事件。
您可以使用幻灯片功能中的event.type
区分事件。
var FLAG = 1;
var currentTarget;
slide: function(event) {
// Code about the drag here
if(event.type = "mousedown"){
FLAG = 2; // now handle mouse move
currentTarget = event.currentTarget;
}else if(event.type = "mousemove"){
if(FLAG == 2){
// use the currentTarget to doSomething()
}
}else if(event.type = "mouseup"){
FLAG = 1;
// drop the target
}
},
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