要相应onclick事件,obj.onclick是不obj的属性:给一函数和函数直接量都可plusorminus.onClick = new Function(){do sth. here};
plusorminus.onClick = new Function_name;
对plusorminus.onClick = new Function("myfunction");也应可以吧
plusorminus.onClick = new Function_name;
对plusorminus.onClick = new Function("myfunction");也应可以吧
即:plusorminus.onClick =myfunction;(不要写成:myfunction())