Javascript基础表单验证

<script type="text/javascript" src="js/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
    function checkForm(form) {      
        if ($("#receivemobile").val() == "") {
            alert("收货人手机号码不能为空！");
            $("#receivemobile").focus();
            return false;
        }
        if ($("#receivemobile").val().length != 11) {
            alert("请输入正确的11位收货人手机号码！");
            $("#receivemobile").focus();
            return false;
        }
        var patrnmobile = /^1[3|4|5|8][0-9]\d{4,8}$/;
        if (!patrnmobile.exec($("#receivemobile").val())) {
            alert("请输入正确的收货人手机号码！");
            $("#receivemobile").focus();
            return false
        }
        var patrn = /^[0-9]*[1-9][0-9]*$/;
        if (!patrn.exec($("#count").val())) {
            alert("请输入正整数！");//不包括0
            $("#count").val("");//清空值
            $("#count").focus();
            return false;
        }
        if ($("#address").val().length < 1 || $("#address").val().length > 20) {
            alert("地址长度应在1-20之间！");
            $("#address").focus();
            return false;
        }
        if (form.email.value.match(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/)==null) {//可以不是用id取的
            alert("请输入正确的邮箱！");
            return false;
        }
          //document.form.submit();//方法提交
          //$("#form").submit();//表单提交
          //window.location = "xxx.jsp";//跳转
          //window.location.reload();//重载 刷新
    }   
</script>

<form action="addOrder" method="post" onsubmit="return checkForm(this)" name="form">
        receivemobile:<input type="text" name="receivemobile" id="receivemobile"><br>
        count:<input type="text" name="count" id="count"><br>
        email:<input type="text" name="email"><br>
        address:<input type="text" name="address" id="address"><br>
        <input type="submit" name="submit">
</form>