检测表单中的不能为空（.notnull）的验证

 作用：一对form标签下有多个（包括一个）表单需要提交时，使用js准确的判断当前按钮对那些元素做判断

 用法：在form标签下 找到当前 表单的容器 给予class="form"，当前表单的提交按钮给予 class="check"
 需要验证为空的元素给予class="notnull" nullmsg="xx不能为空！"提示，需要进行逻辑判断的表单给予class="need"
 判断的类型给予 class="num"(只能是数字) 验证的提示 logicmsg="XX只能是数字"

 给予class="errorMessage"显示错误信息块
 给予class="warn"显示错误信息
 未使用js面向对象编程
 逻辑判断，不传入need标识，直接给出正则表达式属性（自定义）regex="/^\d$/"  做出判断

 在外部实现
 Global.submitCallback button回调函数
 Global.confirmCallback confirm回调函数;
 需要改进的地方：
 暂无

复制代码 代码如下:
/// <reference path="vendor/jquery-1.4.1-vsdoc.js" />
 */
//$(document).ready(
//    function () {
//        $("form").find(".notnull").bind({
//            focus: function () {
//                if ($(this).attr("value") == this.defaultValue) {
//                    $(this).attr("value", "");
//                }
//            },
//            blur: function () {
//                if ($(this).attr("value") == "") {
//                    $(this).attr("value", this.defaultValue);
//                }
//            }
//        });
//    }
//);
///*封装一个万能检测表单的方法*/
///event.srcElement：引发事件的目标对象，常用于onclick事件。
///event.fromElement：引发事件的对象源，常用于onmouseout和onmouseover事件。
///event.toElement：引发事件后，鼠标移动到的目标源，常用于onmouseout和onmouseover事件。
function Global() {
    var _self = this;
}
Global.submitCallback = null;
Global.confirmCallback = null;
$(document).ready(function () {
    //form body
    $("body").find(".form").each(function () {
        this.onclick = function (e) {
            var button = null;
            try {
                button = e.srcElement == null ".check")) {
                //alert("提交")
                var sub = (checkform(this) && CheckInputRex(this) && checkselect(this) && checkChecked(this));
                if (sub) {
                    // Call our callback, but using our own instance as the context
                    Global.submitCallback.call(this, [e]);
                }
                return sub;
            } else if ($(button).is(".confirm")) {
                //alert("删除")
                var sub = confirm($(button).attr("title"));
                if (sub) {
                    Global.confirmCallback.call(this, [e]);
                }
                return sub;
            } else {
                //                    //alert("其它")
                return true;
            }
        }
    });
    /*检测表单中不能为空的元素*/
    function checkform(form) {
        var b = true;
        $(form).find(".notnull").each(function () {
            if ($.trim($(this).val()).length <= 0) {//|| $(this).val() == this.defaultValue
                //                if (this.value != null) {
                //                    $(this).attr("value", "");
                //                }
                //alert($(this).attr("msg"))
                $(this).parents(".form").find(".warn").text($(this).attr("nullmsg"));
                $(this).parents(".form").find(".errorMessage").show();
                $(this).select();
                $(this).focus();
                return b = false;
            }
        });
        if (b == true) {
            $(form).find(".warn").text("");
            $(form).find(".errorMessage").hide();
        }
        return b;
    }
    /*检测表单中必选的下拉列表*/
    function checkselect(form) {
        var b = true;
        $(form).find(".select").each(function (i) {
            var ck = $(this).find('option:selected').text();
            if (ck.indexOf("选择") > -1) {
                $(this).parents(".form").find(".warn").text($(this).attr("nullmsg"));
                $(this).parents(".form").find(".errorMessage").show();
                $(this).select();
                $(this).focus();
                return b = false;
            }
        });
        return b;
    }
    /*检测表单中必选的复选框*/
    function checkChecked(form) {
        var b = true;
        $(form).find(".checkbox").each(function (i) {
            var ck = $(this)[0].checked;
            if (!ck) {
                $(this).parents(".form").find(".warn").text($(this).attr("nullmsg"));
                $(this).parents(".form").find(".errorMessage").show();
                $(this).select();
                $(this).focus();
                return b = false;
            }
        });
        return b;
    }
    //检查是否匹配该正则表达式
    function GetFlase(value, reg, ele) {
        if (reg.test(value)) {
            return true;
        }
        $(ele).parents(".form").find(".warn").text($(ele).attr("logicmsg"));
        $(ele).parents(".form").find(".errorMessage").show();
        $(ele).focus();
        $(ele).select();
        return false; //不能提交
    }
    function CheckInputRex(form) {
        var b = true;
        $(form).find("input[type='text']").each(function () {
            if (typeof ($(this).attr("regex")) == 'string') {
                if ($.trim($(this).val()).length > 0 && $(this).val() != this.defaultValue) {
                    //当前表单的值
                    var value = $(this).attr("value") || $(this).val();
                    var regx = eval($(this).attr("regex"));
                    return b = GetFlase(value, regx, this);
                }
            }
        });
        return b;
    }
    ///检查用户输入的相应的字符是否合法
    ///此方法已废弃
    function CheckInput(form) {
        var b = true;
        $(form).find(".need").each(function () {
            if ($.trim($(this).val()).length > 0 && $(this).val() != this.defaultValue) {
                //当前表单的值
                var value = $(this).attr("value");
                //id的值或者name的属性的值如：[name="contact"]
                var name = $(this).attr("class");
                //检查需要输入的内容是否合法如：联系方式
                var len = name.split(" ");
                for (var i = 0; i < len.length; i++) {
                    switch ($.trim(len[i])) {
                        ///联系方式                                                                                                                                           
                        case "mobile":
                            var reg = /^1\d{10}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///邮箱                                                                                                                                         
                        case "email":
                            var reg = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///两次密码是否一致                                                                                                                               
                        case "password":
                            break;
                        case "password2":
                            if ($("#password").attr("value") != $("#password2").attr("value")) {
                                $(this).select(); //获取焦点
                                $(this).parents(".form").find(".warn").text($(this).attr("logicmsg"));
                                $(this).parents(".form").find(".errorMessage").show();
                                return b = false; //不能提交
                            }
                            break;
                        case "worktel":
                        case "hometel": //家庭电话
                            var reg = /^\d{8}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "post": //邮编
                            var reg = /^\d{6}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "bonus":
                        case "allowance":
                        case "FixedSalary":
                            var reg = /^-"identity":
                            var reg = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "height":
                            var reg = /^[1-2][0-9][0-9]$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "qq":
                            var reg = /^[1-9][0-9]{4,}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "begintime":
                        case "endtime":
                            var reg = /^\d{4}$/;
                            if (reg.test(value) && (parseInt($(".endtime").val()) > parseInt($(".begintime").val()))) {
                                return b;
                            }
                            $.ligerDialog.alert($(this).attr("msg"))
                            $(this).select(); //获取焦点
                            return b = false; //不能提交
                            break;
                        case "num":
                            var reg = /^\d+$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///大陆去香港需要办理往来港澳通行证和香港的签注.因私普通护照号码格式有:                                                          
                        ///14/15+7位数,G+8位数；                                                          
                        ///因公普通的是:P.+7位数；                                                          
                        ///公务的是：S.+7位数 或者                                                           
                        //S+8位数,以D开头的是外交护照                                                           
                        case "postport": //护照号码
                            var reg = /^(P\d{7}|G\d{8}|S\d{7,8}|D\d+|1[4,5]\d{7})$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "bankaccount":
                            var reg = /^[0-9]{19}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                    } //switch
                } //for
            }
        });
        return b;
    }
    ///此方法已经废弃
});
///单击改变背景颜色
$(document).ready(function () {
    var inputs = $("#top>.c>input");
    $(inputs).each(function () {
        this.onclick = function () {
            document.getElementById("main").style.backgroundColor = this.name;
            //$("#main").backgroundColor = this.name;
        }
    });
});

以上代码就是封装过之后的万能检测表单的方法了，希望小伙伴们喜欢