js 数组去除空值

for(var i = 0 ;i<wordarr.length;i++)
                {
                    if(wordarr[i] == "" || typeof(wordarr[i]) == "undefined")
                    {
                        wordarr.splice(i,1);
                        i= i-1;

                    }

                }

原文：http://www.cnblogs.com/afei-happy/p/3951571.html