$scope.setLocal = function(keyword) { var data = localStorage.getItem("aaaaaaa"); // String   arr var j = data == undefined ? [] : JSON.parse(data); if (function(keyword) { for (var i = j.length - 1; i >= 0; i--) { if (j[i] == keyword) return false; } return true; }(keyword)) { j.push(keyword); localStorage.setItem("aaaaaaa", JSON.stringify(j)); } var now = new Date(); console.log(now); ///  ........幹自己的邏輯 };