js常用的一些工具类

//截取路径参数
    function getParams(key) {
        var reg = new RegExp("(^|&)" + key + "=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);
        if (r != null) {
            return unescape(r[2]);
        }
        return null;
    };

    //数组拆分
    function handlerDatas(arr) {
        let obj = {};
        arr.forEach((item, index) => {
            let {部件名称} = item;
            if (!obj[部件名称]) {
                obj[部件名称] = {
                    部件名称,
                    children: []
                }
            }
            obj[部件名称].children.push(item);
        });
        let data = Object.values(obj); // 最终输出
        return data;
    }

    //数组去重
    function uniqueArray(array, key) {
        var result = [array[0]];
        for (var i = 1; i < array.length; i++) {
            var item = array[i];
            var repeat = false;
            for (var j = 0; j < result.length; j++) {
                if (item[key] == result[j][key]) {
                    repeat = true;
                    break;
                }
            }
            if (!repeat) {
                result.push(item);
            }
        }
        return result;
    }

    //日期转字符串格式
    function DateToStr(date) {
        var year = date.getFullYear();//年
        var month = date.getMonth();//月
        var day = date.getDate();//日
        var hours = date.getHours();//时
        var min = date.getMinutes();//分
        var second = date.getSeconds();//秒
        return year + "-" +
            ((month + 1) > 9 ? (month + 1) : "0" + (month + 1)) + "-" +
            (day > 9 ? day : ("0" + day)) + " " +
            (hours > 9 ? hours : ("0" + hours)) + ":" +
            (min > 9 ? min : ("0" + min)) + ":" +
            (second > 9 ? second : ("0" + second));
    }

    //字符串转日期
    function StrToDate(datestr) {
        return new Date(datestr);
    }

    //计算两个日期相差天数
    function DateDiff(sDate1, sDate2) {
        //sDate1和sDate2是2006-12-18格式
        var aDate, oDate1, oDate2, iDays;
        aDate = sDate1.split("-");
        oDate1 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0]);
        aDate = sDate2.split("-");
        oDate2 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0]);
        iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 / 24);//把相差的毫秒数转换为天数
        return iDays;
    }

    //获得两个日期间所有日期-fn1
    Date.prototype.format = function () {
        var s = '';
        var mouth = (this.getMonth() + 1) >= 10 ? (this.getMonth() + 1) : ('0' + (this.getMonth() + 1));
        var day = this.getDate() >= 10 ? this.getDate() : ('0' + this.getDate());
        s += this.getFullYear() + '-'; // 获取年份。
        s += mouth + "-"; // 获取月份。
        s += day;   //获取日。
        return (s); //返回日期。
    };

    //获得两个日期间所有日期-fn2
    function getAll(begin, end) {
        var return_ = [];
        var ab = begin.split("-");
        var ae = end.split("-");
        var db = new Date();
        db.setUTCFullYear(ab[0], ab[1] - 1, ab[2]);
        var de = new Date();
        de.setUTCFullYear(ae[0], ae[1] - 1, ae[2]);
        var unixDb = db.getTime();
        var unixDe = de.getTime();
        for (var k = unixDb; k <= unixDe;) {
            return_.push((new Date(parseInt(k))).format());
            k = k + 24 * 60 * 60 * 1000;
        }
        return return_;
    }

    //日期加减
    function dateOperator(date, days, operator) {
        date = date.replace(/-/g, "/"); //更改日期格式
        var nd = new Date(date);
        nd = nd.valueOf();
        if (operator == "+") {
            nd = nd + days * 24 * 60 * 60 * 1000;
        } else if (operator == "-") {
            nd = nd - days * 24 * 60 * 60 * 1000;
        } else {
            return false;
        }
        nd = new Date(nd);

        var y = nd.getFullYear();
        var m = nd.getMonth() + 1;
        var d = nd.getDate();
        if (m <= 9) m = "0" + m;
        if (d <= 9) d = "0" + d;
        var cdate = y + "-" + m + "-" + d;
        return cdate;
    }