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封裝好的一個萬能檢測表單的方法教程
編輯:關於JavaScript     

檢測表單中的不能為空(.notnull)的驗證

 作用:一對form標簽下有多個(包括一個)表單需要提交時,使用js准確的判斷當前按鈕對那些元素做判斷

 用法:在form標簽下 找到當前 表單的容器 給予class="form",當前表單的提交按鈕給予 class="check"
 需要驗證為空的元素給予class="notnull" nullmsg="xx不能為空!"提示,需要進行邏輯判斷的表單給予class="need"
 判斷的類型給予 class="num"(只能是數字) 驗證的提示 logicmsg="XX只能是數字"

 給予class="errorMessage"顯示錯誤信息塊
 給予class="warn"顯示錯誤信息
 未使用js面向對象編程
 邏輯判斷,不傳入need標識,直接給出正則表達式屬性(自定義)regex="/^\d$/"  做出判斷

 在外部實現
 Global.submitCallback button回調函數
 Global.confirmCallback confirm回調函數;
 需要改進的地方:
 暫無

代碼如下:
/// <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);
//                }
//            }
//        });
//    }
//);
///*封裝一個萬能檢測表單的方法*/
///event.srcElement:引發事件的目標對象,常用於onclick事件。
///event.fromElement:引發事件的對象源,常用於onmouseout和onmouseover事件。
///event.toElement:引發事件後,鼠標移動到的目標源,常用於onmouseout和onmouseover事件。
function Global() {
    var _self = this;
}
Global.submitCallback = null;
Global.confirmCallback = null;
$(document).ready(function () {
    //form body
    $("body").find(".form").each(function () {
        this.onclick = function (e) {
            var button = null;
            try {
                button = e.srcElement == null ? document.activeElement : e.srcElement;
            } catch (e) {
                console.log(e.message)
                button = document.activeElement;
            }
            if ($(button).is(".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 ($(button).is(".confirm")) {
                //alert("刪除")
                var sub = confirm($(button).attr("title"));
                if (sub) {
                    Global.confirmCallback.call(this, [e]);
                }
                return sub;
            } else {
                //                    //alert("其它")
                return true;
            }
        }
    });
    /*檢測表單中不能為空的元素*/
    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;
    }
    /*檢測表單中必選的下拉列表*/
    function checkselect(form) {
        var b = true;
        $(form).find(".select").each(function (i) {
            var ck = $(this).find('option:selected').text();
            if (ck.indexOf("選擇") > -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;
    }
    /*檢測表單中必選的復選框*/
    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;
    }
    //檢查是否匹配該正則表達式
    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) {
                    //當前表單的值
                    var value = $(this).attr("value") || $(this).val();
                    var regx = eval($(this).attr("regex"));
                    return b = GetFlase(value, regx, this);
                }
            }
        });
        return b;
    }
    ///檢查用戶輸入的相應的字符是否合法
    ///此方法已廢棄
    function CheckInput(form) {
        var b = true;
        $(form).find(".need").each(function () {
            if ($.trim($(this).val()).length > 0 && $(this).val() != this.defaultValue) {
                //當前表單的值
                var value = $(this).attr("value");
                //id的值或者name的屬性的值如:[name="contact"]
                var name = $(this).attr("class");
                //檢查需要輸入的內容是否合法如:聯系方式
                var len = name.split(" ");
                for (var i = 0; i < len.length; i++) {
                    switch ($.trim(len[i])) {
                        ///聯系方式                                                                                                                                           
                        case "mobile":
                            var reg = /^1\d{10}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///郵箱                                                                                                                                         
                        case "email":
                            var reg = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///兩次密碼是否一致                                                                                                                               
                        case "password":
                            break;
                        case "password2":
                            if ($("#password").attr("value") != $("#password2").attr("value")) {
                                $(this).select(); //獲取焦點
                                $(this).parents(".form").find(".warn").text($(this).attr("logicmsg"));
                                $(this).parents(".form").find(".errorMessage").show();
                                return b = false; //不能提交
                            }
                            break;
                        case "worktel":
                        case "hometel": //家庭電話
                            var reg = /^\d{8}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "post": //郵編
                            var reg = /^\d{6}$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "bonus":
                        case "allowance":
                        case "FixedSalary":
                            var reg = /^-?([1-9]\d*\.\d*|0\.\d*[1-9]\d*|0?\.0+|0|[1-9]\d)$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        case "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"))
                            $(this).select(); //獲取焦點
                            return b = false; //不能提交
                            break;
                        case "num":
                            var reg = /^\d+$/;
                            return b = GetFlase(value, reg, this);
                            break;
                        ///大陸去香港需要辦理往來港澳通行證和香港的簽注.因私普通護照號碼格式有:                                                          
                        ///14/15+7位數,G+8位數;                                                          
                        ///因公普通的是:P.+7位數;                                                          
                        ///公務的是:S.+7位數 或者                                                           
                        //S+8位數,以D開頭的是外交護照                                                           
                        case "postport": //護照號碼
                            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;
    }
    ///此方法已經廢棄
});
///單擊改變背景顏色
$(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;
        }
    });
});

以上代碼就是封裝過之後的萬能檢測表單的方法了,希望小伙伴們喜歡

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