前端使用elementui开发后台管理系统的常用功能（持续更新）

前言：本次的文章完全是自己开发中遇到的一些问题，经过不断的修改终于完成的一些功能，当个快捷的查看手册吧~

高级筛选的封装

功能描述：数据使用的若依的字典，或者是自定义数据，可以点击每个选项进行选择，取消选择，也可以在已选择进行清除和单个删除

const officeConfig = {title: "高级检索",isShowHeader: false,configList: [{label: "人员性质", // 显示的名称data: [], // 显示的名称type: "dict", // 类型：默认 字典 输入框dict: "personnel_nature", // 如果是字典需要写isMultiple: true, // 是不是多选field: "staffType" // 需要给后端传递的字段名称},{label: "年龄",type: "default",data: [{label: "20岁以下",value: "0 and 20",},{label: "20-30",value: "20 and 30",},],dict: "",isMultiple: false,field: "age"},{label: "请选择",type: "input",data: [{field: "staffName", placeholder: "请填写"},{field: "dutyName", placeholder: "请填写"},{field: "deptName", placeholder: "请填写"},],dict: "",isMultiple: false,field: ""},],showTable: false,tableConfig: {// 表格配置propList: [{ prop: 'inFloor', label: '所属楼层', minWidth: '100'},],showSelectColumn: false,showIndexColumn: true,}
}const queryForm = {}
officeConfig.configList.forEach(item => {if (item.type === "input") {item.data.forEach(val => {queryForm[val.field] = ""})} else {queryForm[item.field] = []}
})export {officeConfig,queryForm
}

// configList 是在外部进行单独配置的<div class="query-wrap"><el-form :model="queryForm" ref="ruleForm" label-width="100px" class="demo-ruleForm"><el-form-item v-for="(item, index) in configList" :key="index" :label="item.label"><template v-if="item.type === 'dict'"><el-checkbox-group v-model="queryForm[`${item.field}`]"><el-checkbox class="radio-btn" v-for="(dict, index) in dict.type[item.dict]" :key="index" :label="dict.value"@change="handleCheckedItemChange(item, dict)">{{dict.label}}</el-checkbox></el-checkbox-group></template><template v-if="item.type === 'default'"><el-checkbox-group v-model="queryForm[`${item.field}`]"><el-checkbox class="radio-btn" v-for="(dict, index) in item.data" :key="index" :label="dict.value"@change="handleCheckedItemChange(item, dict)">{{dict.label}}</el-checkbox></el-checkbox-group></template><template v-if="item.type === 'input'"><div style="display: flex;"><template v-for="(dict, index) in item.data"><el-input v-model="queryForm[`${dict.field}`]" :key="index" :placeholder="dict.placeholder" clearable></el-input></template></div></template></el-form-item><el-form-item label="请选择"></el-form-item></el-form><div class="select-row"><div><div class="select-text">已选条件</div><div class="select-wrap"><div class="item" v-for="(item, index) in selectItem" :key="index">{{item.label}}<i class="el-icon-close" style="margin-left: 5px; cursor: pointer;" @click="handleRemoveItem(item)"></i></div></div><el-tooltip style="margin-right: 15px;" effect="dark" content="查询" placement="top"><el-button icon="el-icon-search" circle @click="handleQuerySuccess"></el-button></el-tooltip><el-tooltip style="margin-right: 15px;" effect="dark" content="清除选项" placement="top"><el-button icon="el-icon-close" circle @click="clearSelectHandle"></el-button></el-tooltip></div></div>
</div><script>
export default {props: {title: {type: String,},isShowHeader: {type: Boolean,default: true},configList: {type: Array,default: () => ([])},queryForm: {type: Object,default: () => ({})},showTable: {type: Boolean,default: true},tableData: {type: Array,default: () => ([])},tableConfig: {type: Object,default: () => ({})},loading: {type: Boolean,default: false},tableTotal: {type: Number},},dicts: [你使用到的字段字段],data() {return {value: "",active: false,selectItem: [],};},methods: {// 点击选择的时候进行一个数据的保存，再次点击删除handleCheckedItemChange(item, data) {console.log(item, data);const arr = this.selectItem.filter(selectItem => {if ((selectItem.value == data.value) && (selectItem.label == data.label)) {return selectItem}})if (!arr.length) {this.selectItem.push({label: data.label, value: data.value, field: item.field})} else {const index = this.selectItem.findIndex((itemIndex) => (itemIndex.value == data.value)&&(itemIndex.label == data.label) )this.selectItem.splice(index, 1)}},handleQuerySuccess() {this.$emit("querySuccess")},// 删除itemhandleRemoveItem(item) {const index = this.selectItem.findIndex((itemIndex) => (itemIndex.value == item.value)&&(itemIndex.label == item.label))this.selectItem.splice(index, 1)this.$emit("removeItem", item)if (!this.selectItem.length) {this.clearSelectHandle()}},// 清空所有选项clearSelectHandle() {this.selectItem = []this.$emit("clearSelectQuery")},handlePutAway() {this.$emit("putAway")},},
};  
</script><style lang="scss" scoped>
::v-deep {.query-wrap {padding: 10px 0;margin-bottom: 20px;background: #FFFFFF;box-shadow: inset 0px 1px 4px 0px #ABC7FF;border-radius: 0px 0px 0px 0px;.el-form-item__label {font-size: 14px;font-weight: 600;color: #142952;margin-right: 10px;}.el-form-item {margin-bottom: 15px;}.el-form-item__content {display: flex;flex-wrap: wrap;align-items: center;.el-radio__input {display: none;}}.radio-btn {margin-right: 20px;background: #EFF4FF;border-radius: 2px;font-size: 12px;color: #3B558A;padding: 0 25px;height: 30px;line-height: 30px;.el-radio__label {font-size: 12px;padding-left: 0;}&.is-checked {background: linear-gradient(270deg, #328EF4 0%, #0468FD 100%);color: #FFFFFF !important;}.el-checkbox__input {display: none;}.el-checkbox__label {padding-left: 0;}}.el-checkbox__input.is-checked + .el-checkbox__label {color: #FFFFFF !important;}}
}
.query-btn {display: flex;justify-content: flex-end;align-items: center;padding: 20px;box-sizing: border-box;
}
.select-row {display: flex;align-items: center;justify-content: space-between;> div:first-child {display: flex;align-items: center;}.select-text {height: 36px;line-height: 36px;width: 100px;padding-right: 12px;box-sizing: border-box;text-align: right;margin-right: 10px;font-size: 14px;font-weight: 600;color: #142952;}.select-wrap {display: flex;flex-wrap: wrap;width: 1054px;> .item {background: #EFF4FF;border-radius: 2px;border: 1px dotted #BCD2FF;margin-right: 20px;height: 30px;line-height: 30px;padding: 0 16px;box-sizing: border-box;margin-bottom: 0;font-size: 14px;color: #0568FD;margin-bottom: 5px;}}.select-clear {font-size: 12px;color: #0079FE;cursor: pointer;}
}
</style>

使用：

<height-searchv-bind="config":query-form="advanQueryForm"@querySuccess="cpnHandleQuerySuccess"@removeItem="handleRemoveItem"@clearSelectQuery="clearSelectQuery"@putAway="handlePutAway"
></height-search>
<script>
import { officeConfig, queryForm } from "./config";
import HeightSearch from "./HeightSearch.vue";export default {name: "UserRegister",dicts: ["sys_normal_disable", "sys_user_sex"],components: { HeightSearch },data() {return {// 高级查询config: officeConfig,advanQueryForm: {},// 遮罩层queryTotal: 0,// 个人信息登记personInfoList: [],};},watch: {// 根据名称筛选机构树deptName(val) {this.$refs.tree.filter(val);},},created() {this.advanQueryForm = { ...queryForm, pageNum: 1, pageSize: 10 };this.handleQuerySuccess();},methods: {highSearchHandle() {this.handleQuerySuccess();},// 高级查询handleQuerySuccess() {// this.loading = true;const obj = { ...this.advanQueryForm };delete obj.pageNum;delete obj.pageSize;getListByConditions(this.advanQueryForm.pageNum, obj).then((response) => {this.personInfoList = response.rows;this.queryTotal = response.total;});},cpnHandleQuerySuccess() {this.advanQueryForm.pageNum = 1;this.handleQuerySuccess();},handleRemoveItem(item) {let arr = [...this.advanQueryForm[item.field]];let newArr = arr.filter((originItem) => originItem != item.value);this.advanQueryForm[item.field] = newArr;},clearSelectQuery() {this.advanQueryForm = { ...queryForm, pageNum: 1, pageSize: 10 };this.handleQuerySuccess();},handlePutAway() {this.advanQueryForm = { ...queryForm, pageNum: 1, pageSize: 10 };},// 查看信息handleSee(row) {this.$router.push({ name: "seeInfo", query: { id: row.staffId } });},},
};
</script>

elementui的表格

• @selection-change 表格前面的select选择
• :show-overflow-tooltip=“true” 表格显示内容非常多，可以…省略
• slot-scope=“scope” 如果相对内容进行自定义展示可以使用默认插槽
• 序号我们需求是分页序号要递增

<el-table v-loading="loading" :data="绑定data数据-数组类型" @selection-change="handleSelectionChange"><el-table-column type="selection" width="55" align="center" /><el-table-column label="序号" type="index" width="50" align="center"><template slot-scope="scope"><span>{{(queryParams.pageNum - 1) * queryParams.pageSize + scope.$index + 1}}</span></template></el-table-column><el-table-column label="想要展示的字段" align="center" prop="staffName" /><el-table-column label="申请原因" align="center" prop="applyReason" :show-overflow-tooltip="true" /><el-table-column label="申请时段" align="center" prop="endTime" width="180"><template slot-scope="scope"><span>{{ scope.row.startTime }}</span></template></el-table-column><el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="240" fixed="right"><template slot-scope="scope"><el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改</el-button><el-button size="mini" type="text" icon="el-icon-tickets" @click="handleDetail(scope.row)">详情</el-button><el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)">删除</el-button></template></el-table-column>
</el-table>

elementui的表格实现跨页多选+回显

• officeBuildingList 绑定的表格数据
• @selection-change="handleOfficeSelect" 选择的方法
• :row-key="getKey" 唯一标识
• :reserve-selection="true"

<el-table class="my-table" :data="officeBuildingList" @selection-change="handleOfficeSelect" ref="trainCourseTable" :row-key="getKey"><el-table-column type="selection" width="55" align="center" :reserve-selection="true" /><el-table-column label="数据" align="center" prop="字段" width="120" />
</el-table>methods: {// 编辑情况回显数据：// 1. 因为是分页，简单做法就是一开始在create中调用获取全部的数据 pageSize：9999listOfficeBuilding({pageNum: 1,pageSize: 9999}).then((res) => {// 拿到form表单字段中的数据，在所有的数据中筛选if (this.form.字段名称) {const arr = this.form.字段名称.split(",")res.rows.forEach(item => {if (arr.includes(item.字段名称) && !this.suppliesMultipleList.includes(item)) {this.suppliesMultipleList.push(item)}})}});// 2. 打开弹窗调用接口获取表格数据，判断有字段并且是编辑状态才需要回显if (this.form.字段名称 && this.form.id) {this.$nextTick(() => {// 把筛选好的this.suppliesMultipleList.forEach(row => {this.$refs.trainCourseTable.toggleRowSelection(row, true)})})}
}
// 点击表格前的复选框保存数据
handleOfficeSelect(val) {this.suppliesMultipleList = val
},
getKey(row) {return row.id;
},

elementui的表单

elementui的日历

<el-calendar v-model="calendarValue"><template slot="dateCell" slot-scope="{date, data}"><div class="date"><div class="left"><span class="date-day">{{data.day.split('-')[2]}}</span><span class="date-lunar">{{getClearList(data.day).lunar}}</span><template v-for="item in workDateArr"><span class="rest-day" v-if="(item.status == '2') && (data.day == item.workDate)">放假</span><span class="working-day" v-if="(item.status == '1') && (data.day == item.workDate)">班</span></template></div><div class="date-festival">{{getClearList(data.day).festival}}</div></div><div style="height: 98px; overflow: hidden;"><template v-for="(item, index) in myScheduleCalendarPlanList"><divclass="info":style="{'background': item.color}"v-if="(new Date(data.day).valueOf()) >= (new Date(item.startTime).valueOf()) && (new Date(data.day).valueOf()) <= (new Date(item.endTime).valueOf())"@click="handleDetail(item.id)"><i class="el-icon-time" style="margin: 0px 5px;"></i><span class="text-area">{{item.eventTitle}}</span></div></template></div><div class="date-add" @click="myCalendarMore(data)"><div>查看全部</div></div></template>
</el-calendar>

这个是缩小以后的效果，为了截取全部，点击日期可以切换。我们这里的放假上班在系统有菜单进行单独配置，通过接口拿到数据和日历的日期进行匹配展示文字

vue获取某几天内的日期和星期几

// 周末
getWeeks() {var day3 = new Date();let days = [];// 这里的6控制的是天数for (let i = 0; i <= 24 * 6; i += 24) {let dateItem = new Date(day3.getTime() + i * 60 * 60 * 1000);let y = dateItem.getFullYear();let m = dateItem.getMonth() + 1;let d = dateItem.getDate(); m = this.addDate0(m);d = this.addDate0(d);let valueItem1 = y + "-" + m + "-" + d; let valueItem = m + "/" + d; var myddy = dateItem.getDay();var weekday = ["日", "一", "二", "三", "四", "五", "六"];days.push({day: `${valueItem1}`,date: `${valueItem}`,week: `${weekday[myddy]}`,name: `${i}`,});}this.winWeakList = daysconsole.log(this.winWeakList);
},
addDate0(time) {if (time.toString().length == 1) {time = "0" + time.toString();}return time;
},

请假时长计算

import moment from "moment";
//  我们的工作日是需要自己配置的
let workDayList = JSON.parse(window.localStorage.getItem("workDayList")) || []
let restDayList = JSON.parse(window.localStorage.getItem("restDayList")) || []const WORK_START_TIME = 8.30; // 工作开始时间
const WORK_END_TIME = 17.30; // 工作下班时间
const BREAK_TIME = 1.30; // 休息时间
const BREAK_START = 12; // 上午休息时间
const BREAK_END = 13.30; // 下午休息结束时间
const WORK_TIME = 9; //
/**** @param {*Number} num* @returns 分离出来的整数和小数*/
// 获取某一天的下班时间
const startDateSupplement = (value) => {var year = value.getFullYear();var month = value.getMonth() + 1;var day = value.getDate();return new Date(`${year}-${month}-${day} 17:30:00`);
}
// 获取某一天的开始上班时间
const endDateSupplement = (value) => {var year = value.getFullYear();var month = value.getMonth() + 1;var day = value.getDate();console.log(year, month, day);return new Date(`${year}-${month}-${day} 08:30:00`);
}// 使用二：跨日期计算
// sTime开始日期 eTime结束日期
const calcDay = (sTime, eTime) => {let days = leaveBydays(sTime, eTime, 1);return days;
};const leaveBydays = (sTime, eTime, complement = 0) => {// 把传入的开始时间和结束时间的 分钟和秒钟格式化const stratTime =  moment(sTime).format('HH.mm');const endTime =  moment(eTime).format('HH.mm');let daysconst start1 = stratTime == "08.30" ? true : falseconst start2 = endTime == "17.30" ? true : false// 1. 开始时间等于上班时间和结束时间等于下班时间if (start1 && start2) {const to = moment(eTime).format('YYYY-MM-DD')const at = moment(sTime).format('YYYY-MM-DD')const originDay = moment(to).diff(at, 'day') + 1;let sday = sTime.getDate();let weekdays = 0;for (let i = 0; i < Math.round(originDay); i++) {let nowDay = new Date(new Date(sTime).setDate(sday + i));if (checkDay(nowDay)) {weekdays++;}}const finallyDays = originDay - weekdaysconst finallyIntHours = finallyDays * 9// console.log("开始时间等于上班时间和结束时间等于下班时间", finallyIntHours);return finallyIntHours;} else {// 1.计算出原始的天数const to = moment(eTime).format('YYYY-MM-DD HH:mm')const at = moment(sTime).format('YYYY-MM-DD HH:mm')let originDay = moment(to).diff(at, 'day') + 1;console.log(originDay);// 2.获取第一天的提起let sday = sTime.getDate();let weekdays = 0;for (let i = 0; i < Math.round(originDay); i++) {let nowDay = new Date(new Date(sTime).setDate(sday + i));if (checkDay(nowDay)) {weekdays++;}}//console.log(weekdays);let dayTime = 0;let dayOneTime;let dayLastTime;// 计算第一天的日期小时数const startToEndOne = startDateSupplement(sTime)const finallyResultOne = getTime(sTime, startToEndOne)//console.log("日期区间1", finallyResultOne);if (finallyResultOne != 0) {dayOneTime = `${finallyResultOne.hours}.${finallyResultOne.resultMinutes}`;dayTime += 1} else {dayOneTime = 0}const startToEndLast = endDateSupplement(eTime)const finallyResultLast = getTime(startToEndLast, eTime)//console.log("日期区间2", finallyResultLast);if (finallyResultLast != 0) {dayTime += 1dayLastTime = `${finallyResultLast.hours}.${finallyResultLast.resultMinutes}`;} else {dayLastTime = 0}console.log(`原始天数${originDay}，周末天数${weekdays}，相差${dayTime}，第一天相差${dayOneTime}，最后一天相差${dayLastTime}`);const finallyDays = originDay - weekdays - dayTimeconst finallyIntHours = finallyDays * 9// const finallyDayOneTime = dayOneTime?dayOneTime:0// const finallyDayLastTime = dayLastTime?dayLastTime:0const resultTime = Number(finallyIntHours) + parseFloat(dayOneTime) + parseFloat(dayLastTime)console.log(finallyDays, finallyIntHours, dayOneTime, dayLastTime, resultTime);return resultTime < 0 ? 0 : resultTime}
};// 使用一：单个日期计算，当天
const getTime = (beginTime, endTime) => {if (checkDay(beginTime)) {return 0}var dateDiff = endTime.getTime() - beginTime.getTime();//时间差的毫秒数var dayDiff = Math.floor(dateDiff / (24 * 3600 * 1000));//计算出相差天数var leave1 = dateDiff%(24*3600*1000)    //计算天数后剩余的毫秒数var hours = Math.floor(leave1/(3600*1000))//计算出小时数//计算相差分钟数var leave2 = leave1%(3600*1000)    //计算小时数后剩余的毫秒数var minutes = Math.floor(leave2/(60*1000))//计算相差分钟数//计算相差秒数var leave3 = leave2%(60*1000)      //计算分钟数后剩余的毫秒数var seconds = Math.round(leave3/1000)console.log(" 相差 "+dayDiff+"天 "+hours+"小时 "+minutes+" 分钟"+seconds+" 秒")// return dayDiff+"天 "+hours+"小时 "+minutes+" 分钟";let resultMinutes = 0if (minutes == 0) {resultMinutes = 0} else if (minutes < 30) {resultMinutes = 5} else if (minutes == 30){resultMinutes = 5} else if (minutes > 30) {hours = hours + 1// resultMinutes = minutes / 10}const finallyResult = {dayDiff: dayDiff,hours: hours,minutes: minutes,resultMinutes: resultMinutes,seconds: seconds}console.log(finallyResult);return finallyResult
}//判断日期是否处于周六、周日（节假日后续完善）
const checkDay = (time) => {let flag = false;const formtTime =  moment(time).format('YYYY-MM-DD');if (!!workDayList.includes(formtTime)) {flag = falsereturn flag}if (!!restDayList.includes(formtTime)) {flag = truereturn flag}let day = time.getDay();flag = day === 0 || day === 6 ? true : false;return flag;
};export { calcDay, getTime};

import { calcDay, getTime } from "@/utils/calcTime";
import moment from "moment";
// 日期计算
endTimeChange(val) {if (this.leaveDateRange.length>1) {this.form.startTime = this.leaveDateRange[0];this.form.endTime = this.leaveDateRange[1];this.addStartTime = this.DateFormat(this.form.startTime);this.addEndTime = this.DateFormat(this.form.endTime);const startDay = new Date(this.form.startTime).getDate();const endDay = new Date(this.form.endTime).getDate();const startTime = moment(this.form.startTime).format("HH:mm");const endTime = moment(this.form.endTime).format("HH:mm");if (startDay == endDay) {const timeRange = getTime(this.form.startTime, this.form.endTime);this.form.leaveLength = parseFloat(`${timeRange.hours}.${timeRange.resultMinutes}`) + "";console.log(this.form.leaveLength);} else {const day = calcDay(this.form.startTime, this.form.endTime);this.form.leaveLength = day;}}
},
DateFormat(value) {// 根据给定的字符串，得到特定的日期// var date = new Date(value);var year = value.getFullYear();var month = value.getMonth() + 1;var day = value.getDate();var hour = value.getHours();var min = value.getMinutes();var sec = value.getSeconds();const dateStr = `${String(year)}-${String(month).padStart(2, "0")}-${String(day).padStart(2, "0")} ${String(hour).padStart(2, "0")}:${String(min).padStart(2, "0")}:${String(sec).padStart(2, "0")}`;return dateStr;
},