前端常用的通用方法javascript.common.js

在项目开发过程中，常遇到一样的方法，这时候就可以封装起来

PS：其实也过了好久，这里都已经不是最新的了

'use strict';

var JavascriptCommon = {

    /**

    * 剪切字符串

    * @ str 原字符串

    * @ 最大长度   

    */

    MsgCutWord: function (str, num) {

        if (str == null) { str = ""; }

        var result = str;

        var wordLength = str.length;

        if (wordLength > num) {

            result = str.substr(0, num);

            result += "...";

        }

        return (result);

    },

    /**

    *  修改日期格式年月日

    *  @ jsondate json日期

    *  @ splitchar 分隔符

    */

    ChangeDateFormat: function (jsondate, splitchar) {

        if (!jsondate) { return ""; }

        jsondate = jsondate.replace("/Date(", "").replace(")/", "");

        if (jsondate.indexOf("+") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("+"));

        }

        else if (jsondate.indexOf("-") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("-"));

        }

        var date = new Date(parseInt(jsondate, 10));

        var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;

        var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();

        return date.getFullYear() + splitchar + month + splitchar + currentDate;

    },

    /**

    *  修改日期格式年月日

    *  @ jsondate json日期

    *  @ splitchar 分隔符

    */

    ChangeDateFormat_hhmmss: function (jsondate, splitchar) {

        if (!jsondate) { return ""; }

        jsondate = jsondate.replace("/Date(", "").replace(")/", "");

        if (jsondate.indexOf("+") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("+"));

        }

        else if (jsondate.indexOf("-") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("-"));

        }

        var date = new Date(parseInt(jsondate, 10));

        var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;

        var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();

        var hh = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();

        var mm = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();

        return date.getFullYear() + splitchar + month + splitchar + currentDate + " " + hh + ":" + mm;

    },

    /**

    *  获得当天对应的天数

    *  @ jsondate json日期

    *  @ splitchar 分隔符

    */

    GetDateDay: function (jsondate) {

        if (!jsondate) { return ""; }

        jsondate = jsondate.replace("/Date(", "").replace(")/", "");

        if (jsondate.indexOf("+") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("+"));

        }

        else if (jsondate.indexOf("-") > 0) {

            jsondate = jsondate.substring(0, jsondate.indexOf("-"));

        }

        var date = new Date(parseInt(jsondate, 10));

        return date.getDate();

    },

    /**

    * 设置Cookie 【js版】

    * @ name 名称

    * @ value 内容

    * @ time 保存时间

    * @ path [可选] 路径

    * 删除时time传 -1

    */

    MsgSetCookie: function (name, value, time, path) {

        path = path || "";

        var d = new Date();

        d.setTime(d.getTime() + (time * 24 * 60 * 60 * 1000));

        var expires = "expires=" + d.toUTCString();

        path = "path=" + path;

        document.cookie = name + "=" + value + "; " + expires + "; " + path;

    },

    /**

    * 读取Cookie 【js版】

    * @ name 名称

    */

    MsgGetCookie: function (name) {

        name = (name + "=");

        var ca = document.cookie.split(';');

        for (var i = 0; i < ca.length; i++) {

            var c = ca[i];

            while (c.charAt(0) == ' ') c = c.substring(1);

            if (c.indexOf(name) != -1) return c.substring(name.length, c.length);

        }

        return "";

    },

    /**

    * 生成Guid 唯一主键

    * 把英文和-全部替换成纯数字

    */

    Guid: function () {

        var result = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {

            var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);

            return v.toString(16);

        });

        return result.replace(/-/ig, parseInt(Math.random() * 10)).replace(/[a-zA-Z]/ig, parseInt(Math.random() * 10));

    },

    /**

    * Base64加密解密类

    * @ .encode() 加密

    * @ .decode() 解密

    */

    Base64: function () {

        var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

        this.encode = function (input) {

            input = input || "";

            var output = "";

            var chr1, chr2, chr3, enc1, enc2, enc3, enc4;

            var i = 0;

            input = _utf8_encode(input);

            while (i < input.length) {

                chr1 = input.charCodeAt(i++);

                chr2 = input.charCodeAt(i++);

                chr3 = input.charCodeAt(i++);

                enc1 = chr1 >> 2;

                enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);

                enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);

                enc4 = chr3 & 63;

                if (isNaN(chr2)) {

                    enc3 = enc4 = 64;

                } else if (isNaN(chr3)) {

                    enc4 = 64;

                }

                output = output +

    _keyStr.charAt(enc1) + _keyStr.charAt(enc2) +

    _keyStr.charAt(enc3) + _keyStr.charAt(enc4);

            }

            return output;

        };

        this.decode = function (input) {

            input = input || "";

            var output = "";

            var chr1, chr2, chr3;

            var enc1, enc2, enc3, enc4;

            var i = 0;

            input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

            while (i < input.length) {

                enc1 = _keyStr.indexOf(input.charAt(i++));

                enc2 = _keyStr.indexOf(input.charAt(i++));

                enc3 = _keyStr.indexOf(input.charAt(i++));

                enc4 = _keyStr.indexOf(input.charAt(i++));

                chr1 = (enc1 << 2) | (enc2 >> 4);

                chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);

                chr3 = ((enc3 & 3) << 6) | enc4;

                output = output + String.fromCharCode(chr1);

                if (enc3 != 64) {

                    output = output + String.fromCharCode(chr2);

                }

                if (enc4 != 64) {

                    output = output + String.fromCharCode(chr3);

                }

            }

            output = _utf8_decode(output);

            return output;

        };

        var _utf8_encode = function (string) {

            string = string.replace(/\r\n/g, "\n");

            var utftext = "";

            for (var n = 0; n < string.length; n++) {

                var c = string.charCodeAt(n);

                if (c < 128) {

                    utftext += String.fromCharCode(c);

                } else if ((c > 127) && (c < 2048)) {

                    utftext += String.fromCharCode((c >> 6) | 192);

                    utftext += String.fromCharCode((c & 63) | 128);

                } else {

                    utftext += String.fromCharCode((c >> 12) | 224);

                    utftext += String.fromCharCode(((c >> 6) & 63) | 128);

                    utftext += String.fromCharCode((c & 63) | 128);

                }

            }

            return utftext;

        };

        var _utf8_decode = function (utftext) {

            var string = "";

            var i = 0;

            var c = c1 = c2 = 0;

            while (i < utftext.length) {

                c = utftext.charCodeAt(i);

                if (c < 128) {

                    string += String.fromCharCode(c);

                    i++;

                } else if ((c > 191) && (c < 224)) {

                    c2 = utftext.charCodeAt(i + 1);

                    string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));

                    i += 2;

                } else {

                    c2 = utftext.charCodeAt(i + 1);

                    c3 = utftext.charCodeAt(i + 2);

                    string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));

                    i += 3;

                }

            }

            return string;

        };

    },

    /**

    * 打印对象属性和方法

    * @ obj 对象

    */

    ShowObjectAttr: function (obj) {

        for (var name in obj) {

            console.log(name + ": " + obj[name]);

        }

    },

    /**

    * 获取纯文字

    * @ html 富文本/html标签

    * @ length 长度 可选[默认全部]

    */

    MsgGetPureText: function (html, length) {

        var text = html.replace(/<[^>]+>/g, "");

        length = isNaN(length) ? text.length : length;

        return text.substring(0, length) + "...";

    },

    /**

    * 翻译状态

    * @ state

    */

    TranslateState: function (state) {

        switch (state) {

            case "0": return "待受理";

            case "1": return "待受理";

            case "2": return "已受理";

            case "3": return "不受理";

            case "4": return "已取消";

            case "5": return "被取消";

            default: return "未定义";

        }

    },

    /**

    * 邮件判断

    * @ email

    */

    ValidateEmail: function (email) {

        var myreg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;

        return myreg.test(email);

    },

    /**

    * 电话判断

    * @ phone

    */

    ValidatePhone: function (phone) {

        var myreg = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/;

        return myreg.test(phone);

    }

};