本文介绍一种JavaScript实现方式，允许为指定对象同时绑定多个事件处理程序。通过自定义MultiHandle类管理多个回调函数，并在触发事件时依次执行所有注册的处理器，从而简化复杂交互逻辑的开发。
JavaScript多事件处理程序实现
本文介绍一种JavaScript实现方式，允许为指定对象同时绑定多个事件处理程序。
若需让对象在点击时同时执行多个操作，可参考以下代码实现。
/* Start of the multihandle Object...*/
function MultiHandle(owner){
var my_handlers = new Array();
var my_owner = owner;
this.append = function(handler){
my_handlers[my_handlers.length] = handler;
}
this.fire = function(evt){
var i;
for(i = 0; i < my_handlers.length; i++){
my_owner.tempspace = my_handlers[i];
my_owner.tempspace(evt);
}
}
}
/* End of the multihandle object*/
/* start of the object add event handler script */
/*This bit goes where you'd normally write...
... object.onmouseup = [event handler]...
... where [event handler] is an existing function ...
... that handles an event, or even an
... anonymous function.*/
if(typeof(MultiHandle) != "undefined"){
var mup_handler = object.mh_onmouseup;
if(!mup_handler){
mup_handler = new MultiHandle(object);
object.mh_onmouseup = mup_handler;
object.onmouseup = function(evt){
this.mh_onmouseup.fire(evt);
};
}
mup_handler.append([event handler]);
}else{
object.onmouseup = [event handler];
}希望本文所述对大家的javascript程序设计有所帮助。