<script type="text/javascript">
        //加運算
        function Sum(x, y) {
            return parseInt(x) + parseInt(y);
        }
        //減運算
        function Sub(x, y) {
            return parseInt(x) - parseInt(y);
        }
 </script>

<script>   
       //表單驗(yan)證，可(ke)以在多個(ge)表單中使(shi)用這一(yi)個(ge)函(han)數(shu)來完成驗(yan)證
        function CheckForm() {
            var name = document.getElementById("name");
            var password = document.getElementById("password");
            var email = document.getElementById("email");
            if (name == "") {
                alert("請(qing)輸入用戶名");
                return false;
            }
            if (password == "") {
                alert("請輸入(ru)密碼");
                return false;
            }
            if (email == "") {
                alert("請輸(shu)入郵件地(di)址(zhi)");
                return false;
            }
            document.getElementsByTagName("form")[0].submit();
            return true;

        }
</script>

       //道具對(dui)象
        var Props = {
            init: function () {//對象中的方法
                //對象初始化
            },
            GetHtmlTags: function () {
                //構建HTML代碼塊
            },
            Language: ["中文", "英文"],
            Name: "道具"
        };

   function Big() {
            var name = "方法big";
            function Small() {
                name = "方法small";
            }
            Small();
            return name;
        }
   alert(Big());

  function ReturnObject() {
            var name = "zzl";
            return {//返回一個(ge)對象，對象里的屬(shu)性對外(wai)公開
                Name: name,
                Age: 30
            };
        }
 alert(ReturnObject().Name);

        //函數作為參數進行(xing)傳遞
        function AlertBox(msg, callback) {
            if (msg != null) {
                callback(msg);
            }
            else {
                alert("null message");
            }
        }
        //js的回調函數
        AlertBox("可愛的可愛", function (msg) {
            alert(msg);
        });