大神指点一下下~啦~以下案例，怎么实现呢~~

Question

问题有些白痴，可小白真心求教~嫌弃的可以略过document.onmouseup=function(){document.onmousemove=null;}转换成addEventListeren怎么样处理？javascriptdocument.addEventListeren("mouseup",function(){document.addEventListeren("mousemove",function(){//这里应该怎么写~我要实现上面的当鼠标抬起，鼠标移动为null？},false);},false);

Answer 1

varmovehandler=function(){
//...
};
document.addEventListener("mousemove",movehandler,false);
document.addEventListener("mouseup",function(){
document.removeEventListener("mousemove",movehandler,false);
},false);
                            

Answer 2

document.onmousemove=null;
null相当于什么也不干。也就是取消绑定之前的事件~所以是removeEventListener或detachEvent