一、jquery为多个选择器绑定同一个事件
$("#start,#end").on("click",function(){
alert("The paragraph was clicked.");
});
二、多个事件绑定同一个函数
$("p").on("mouseover mouseout",function(){
$("p").toggleClass("intro");
});
三、多个事件绑定不同函数
$("p").on({
mouseover:function(){$("body").css("background-color","lightgray");},
mouseout:function(){$("body").css("background-color","lightblue");},
click:function(){$("body").css("background-color","yellow");}
});