function gun(){ this.gun=document.createElement("div") this.gun.className="gunBox" document.body.appendChild(this.gun); var othis = this; this.move = function(){ document.addEventListener('mousemove',function(e){ othis.gun.style.left = e.clientX - 48+'px'; othis.gun.style.top = e.clientY - 48+'px'; othis.gun.style.display = "block"; }) }}
這里的this為何要賦值給othis再用，othis與原來的this有什么區別？為什么不能把
瀟湘沐
2018-12-12 18:19:42
