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前端常用的通用方法javascript.common.js

前端常用的通用方法javascript.common.js

作者: MsgSS | 来源:发表于2018-11-01 23:50 被阅读30次

    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);

        }

    };

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