Javascript 无法删除GoogleMaps中的事件侦听器
我在点击按钮时注册了一个事件:Javascript 无法删除GoogleMaps中的事件侦听器,javascript,events,google-maps-api-3,Javascript,Events,Google Maps Api 3,我在点击按钮时注册了一个事件: var paths=[]; var mapPolylineListener=e.addEventToTarget(map,'click',function(event){ //keep adding points to the array //draw the polyline if there are two points //extend the polyline with this point once it has been d
var paths=[];
var mapPolylineListener=e.addEventToTarget(map,'click',function(event){
//keep adding points to the array
//draw the polyline if there are two points
//extend the polyline with this point once it has been drawn
}
e.addEventToTargetOnce(map,'rightclick',function(event){
console.log('Polyline right click event called');
if(typeof mapPolylineListener!='undefined')
{
console.log('stop drawing the map listener');
//do stuff here like encoding to geometry and making AJAX calls
paths=[];
mapPolylineListener=void 0;
}
事件模块定义了以下功能:
addEventToTarget:function(onWhat,eventType,fn)
{
gmaps.event.addListener(onWhat,eventType,fn);
}
addEventToTargetOnce:function(onWhat,eventType,fn)
{
gmaps.event.addListenerOnce(onWhat,eventType,fn);
}
我使用requirejs模块,我使用模块指定功能:
e=gmaps.event;
gmaps=window.google.maps;
在我的控制台中,它显示:
Polyline right click event called
而且检查似乎总是失败
if(typeof mapPolylineListener!='undefined')
所以,我试着做了一个=null和if(mappylylinelistener)
检查两者都失败
如何修复此问题以执行if块中的代码?我不确定requirejs模块是如何工作的。。。由于没有从
addeventottarget
返回任何内容,因此我将更改以下内容:
addEventToTarget:function(onWhat,eventType,fn)
{
var handle = gmaps.event.addListener(onWhat,eventType,fn);
return handle;
}
然后在e.addEventToTargetOnce(映射,'rightclick',函数(事件){…