The animate () method in JQuery uses

JQuery animate () method usage instructions

 Syntax: $ (selector). Animate ({params},speed,callback)where the params is a list of parameters, for example:{Left : ' ++50px ',opacity: ' 0.5 ',height: ' 200px ',width: ' 300px '};Speed Specifies that the animation display time, can be ' slow ' and ' fast ', can also be set to the number of milliseconds; callback is the callback function that executes after the animation is finished, and can be set by itself.  Demo Example: $ (document). Ready (function () { $ ("button"). Click (function () { $ ("div"). Animate ({Left : ' +=50px ', opacity: ' 0.5 ', height: ' 150px ', width: ' 150px ' },1000,function () {alert ("Hahahha")});   }); });

The animate () method in JQuery uses