qimall/backend/web/resources/js/common.js

if (!String.prototype.endsWith) {
    //判断String这个对象原型是否有endsWith方法，没有的话，就用加上这个方法
    Object.defineProperty(String.prototype, 'endsWith', {
        enumerable: false,
        configurable: false,
        writable: false,
        value: function (searchString, position) {
            position = position || this.length;
            position = position - searchString.length;
            var lastIndex = this.lastIndexOf(searchString);
            return lastIndex !== -1 && lastIndex === position;
        }
    });
}
/**
 * 浏览器跳转链接
 * @param {{r: string, id}} params
 * @param {bool} newWindow
 */
const navigateTo = (params, newWindow = false) => {
    let url = null;
    if (typeof params === 'string') {
        url = params;
    } else {
        const queryString = Qs.stringify(params);
        url = `${_scriptUrl}?${queryString}`;
    }
    if (newWindow) {
        window.open(url);
    } else {
        window.location.href = url;
    }
};

const historyGo = (number) => {
    if (typeof number === 'number') {
        window.history.go(number);
    }
};

const Navigate = {
    install(Vue, options) {
        Vue.prototype.$navigate = function (params, newWindow) {
            navigateTo(params, newWindow);
        }
    }
};

const HistoryGo = {
    install(Vue, options) {
        Vue.prototype.$historyGo = function (number) {
            historyGo(number);
        }
    }
};

Vue.use(Navigate);
Vue.use(HistoryGo);

/**
 * 获取get请求参数的值
 * @param {String} name
 * @returns {String||null}
 */
const getQuery = (name) => {
    const reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
    const r = window.location.search.substr(1).match(reg);
    if (r != null) {
        return decodeURIComponent(r[2]);
    }
    return null;
};

const getLastMonth = () =>{
    const currentDate = new Date();
    const lastMonthStartDate = new Date(currentDate.getFullYear(), currentDate.getMonth() - 1, 1);
    const lastMonthEndDate = new Date(currentDate.getFullYear(), currentDate.getMonth(), 0);
    return [lastMonthStartDate, lastMonthEndDate]
};

/**
 * 获取cookie值
 * @param {String} cname
 * @returns {String||null}
 */
const getCookieValue = (cname) => {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.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) == 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}

/**
 * 生成随机字符串
 * @param {Number} len
 * @returns {string}
 */
const randomString = (len) => {
    len = len || 32;
    let $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
    /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/
    let maxPos = $chars.length;
    let pwd = '';
    for (i = 0; i < len; i++) {
        pwd += $chars.charAt(Math.floor(Math.random() * maxPos));
    }
    return pwd;
};

const common = axios.create({
    transformRequest: [function (data, headers) {
        if (data instanceof FormData) {
            data.append('_csrf', _csrf);
        } else {
            if (data && !data['_csrf']) {
                data['_csrf'] = _csrf;
            }
            data = Qs.stringify(data);
        }
        return data;
    }],
});

window.request = common;

common.defaults.baseURL = _scriptUrl;
common.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';
common.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';

common.interceptors.request.use(function (config) {
    return config;
}, function (error) {
    return Promise.reject(error);
});

common.interceptors.response.use(function (response) {
    if (response.data && typeof response.data.code !== 'undefined') {
        if (response.data.code >= 400) {
            if (_layout) {
                _layout.$alert(response.data.msg, '错误');
            } else {
                console.log(response.data);
            }
        } else {
            return response;
        }
    } else {
        return Promise.reject(response);
    }
}, function (error) {
    if (_layout) {
        console.log(error);
    } else {
        console.log(error);
    }
    return Promise.reject(error);
});

Vue.use({
    install(Vue, options) {
        Vue.prototype.$request = request;
    }
});

// 传入请求地址与页数获取列表
const loadList = (url, page) => {
    return request({
        params: {
            r: url,
            page: page
        },
    }).then(e => {
        if (e.data.code === 0) {
            return e.data.data;
        } else {
            this.$message.error(e.data.msg);
        }
    }).catch(e => {
    });
};

/**
 * 判断一个值是否为空
 * @param {*} val 
 */
const isEmpty = (val) => {
    // null or undefined
    if (val == null) return true;
    if (typeof val === 'boolean') return false;
    if (typeof val === 'number') return !val;
    if (val instanceof Error) return val.message === '';
    switch (Object.prototype.toString.call(val)) {
        // String or Array
        case '[object String]':
        case '[object Array]':
            return !val.length;
        // Map or Set or File
        case '[object File]':
        case '[object Map]':
        case '[object Set]': {
            return !val.size;
        }
        // Plain Object
        case '[object Object]': {
            return !Object.keys(val).length;
        }
    }
    return false;
}
/**
 * 判断一个元素是否在数组中
 * @param {*} search 查找的元素
 * @param {*} array 数组
 */
const inArray = (search, array) => {
    for (var i in array) {
        if (array[i] == search) return true;
    }
    return false;
}

/**
 * 时间格式化
 * @param {*} fmt YYYY-mm-dd HH:MM:SS
 * @param {*} date 日期
 */
const dateFormat = (fmt, date) => {
    let ret;
    const opt = {
        "Y+": date.getFullYear().toString(),        // 年
        "m+": (date.getMonth() + 1).toString(),     // 月
        "d+": date.getDate().toString(),            // 日
        "H+": date.getHours().toString(),           // 时
        "M+": date.getMinutes().toString(),         // 分
        "S+": date.getSeconds().toString()          // 秒
        // 有其他格式化字符需求可以继续添加，必须转化成字符串
    };
    for (let k in opt) {
        ret = new RegExp("(" + k + ")").exec(fmt);
        if (ret) {
            fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
        };
    };
    return fmt;
}

/**
 * 转成N位小数,并格式化显示
 * @param {*} num 数字
 * @param {*} place 小数保留位数
 * @param {*} is_negative 是否允许负数
 */
const toNumber = (num,place = 0,is_negative = false)=>{
    var t = num.charAt(0);
    let pattern = new RegExp('^\\D*(\\d*(?:\\.\\d{0,'+place+'})?).*$','g');
    num = num.replace(".", "$#$") //把第一个字符'.'替换成'$#$'
        .replace(/\./g, "") //把其余的字符'.'替换为空
        .replace("$#$", ".") //把字符'$#$'替换回原来的'.'
        .replace(/[^\d.]/g, "") //只能输入数字和'.'
        .replace(/^\./g, "") //不能以'.'开头
        .replace(pattern, '$1') //只保留2位小数  
    if (t == '-' && is_negative === true) {
        num = '-' + num
    }

    if(num.split('.').length == 1 && num.startsWith(0) && num.length > 1) num = 0;// 0开头的输入值改为0

    return num
}

const getObjects = (obj, key, val)=> {
    var objects = [];
    for (var i in obj) {
        if (!obj.hasOwnProperty(i)) continue;
        if (typeof obj[i] == 'object') {
            objects = objects.concat(getObjects(obj[i], key, val));    
        } else 
        //if key matches and value matches or if key matches and value is not passed (eliminating the case where key matches but passed value does not)
        if (i == key && obj[i] == val || i == key && val == '') { //
            objects.push(obj);
        } else if (obj[i] == val && key == ''){
            //only add if the object is not already in the array
            if (objects.lastIndexOf(obj) == -1){
                objects.push(obj);
            }
        }
    }
    return objects;
}
 
/**
 * 获取对象中包含指定key的值列表
 * @param {*} obj 
 * @param {*} key 
 */
const getValues = (obj, key) => {
    var objects = [];
    for (var i in obj) {
        if (!obj.hasOwnProperty(i)) continue;
        if (typeof obj[i] == 'object') {
            objects = objects.concat(getValues(obj[i], key));
        } else if (i == key) {
            objects.push(obj[i]);
        }
    }
    return objects;
}

/**
 * 获取对象中包含指定值的key列表
 * @param {*} obj 
 * @param {*} val 
 */
const getKeys = (obj, val) => {
    var objects = [];
    for (var i in obj) {
        if (!obj.hasOwnProperty(i)) continue;
        if (typeof obj[i] == 'object') {
            objects = objects.concat(getKeys(obj[i], val));
        } else if (obj[i] == val) {
            objects.push(i);
        }
    }
    return objects;
}

/**
 * 获取对象的key列表
 * @param {*} obj
 */
const objectKeys = (obj) => {
    var keys = [];
    for (var i in obj) {
        keys.push(i);
    }
    return keys;
}

/**
 * 判断是否为JOSN字符串
 */
function isJSON(str) {
    if (typeof str == 'string') {
        try {
            var obj=JSON.parse(str);
            if(typeof obj == 'object' && obj ){
                return true;
            }else{
                return false;
            }

        } catch(e) {
            console.log('error：'+str+'!!!'+e);
            return false;
        }
    }
    console.log('It is not a string!')
}