11月15日笔记及心得

        first();
        function first()
            {var theme=document.getElementsByClassName("content-wrapper");
            for (var i=0;i<theme.length ; i++)
            {
                theme[i].style.setProperty('background-color','white');
            }
            if (localStorage.length>0)
                { for (var i=0;i<localStorage.length ;i++ )
                { var id=localStorage.key(i);
                document.getElementById(id).parentNode.parentNode.style.setProperty('background-color','pink');
                }
            }
        };


        function like(obj){
             var id=obj.childNodes[1].id;
             var name=obj.childNodes[1].innerHTML;
                 for (var i=0;i<localStorage.length;i++ )
                 {       if (localStorage.key(i)==id)
                         {localStorage.removeItem(id);
                         first();
                         return;
                         }
                 }
            localStorage.setItem(id,name);
            first();
            }

去除数组中重复内容：

var a=[1,2,3,3,3,4,5,6,2,2,2,2,2,2,2,2,77,8,8,11]; for (var i=0;i