(资料图)
一。手动生成二维码的.js代码
这里要引入一个官方文档wxapp.qrcode.min.js
let drawQrcode = require("../utils/wxapp.qrcode.min.js");//引入wxapp.qrcode.min.js文件createQRcode(canvasWidth, canvasHeight, canvasId, url) { // 调用qrcode.js里的方法,传入对应参数 drawQrcode({ width: canvasWidth, height: canvasHeight, canvasId: canvasId, text: url }) console.log(drawQrcode.width) }, setCanvasSize() { let size = {}; // getSystemInfoSync 微信小程序提供getSystemInfoSync获取设备的信息 let res = wx.getSystemInfoSync(); // console.log(res); // 获取比例 let scale = 686 / 750; let width = res.windowWidth * scale; let height = width; size.w = width; size.h = height; return size; }, formsubmit(e) { let url = e.detail.value.url || this.data.placeholder; // let url = e.detail.value.url ? e.detail.value.url : this.data.placeholder; wx.showToast({ title: "生成中", icon: "loading", duration: 2000 }) let that_ = this; let timer = setTimeout(() => { let size = that_.setCanvasSize(); //调用createQRcode方法 that_.createQRcode(size.w, size.h, "mycanvars", url); wx.hideToast(); clearTimeout(timer); }, 2000)}, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { //setCanvasSize 拿到画布区域的尺寸(微信小程序不支持dom的操作,所以单独定义方法去获取) let size = this.setCanvasSize(); // console.log(size); let url = this.data.placeholder; //调用createQRcode方法 this.createQRcode(size.w, size.h, "mycanvars", url); },
二。准备工作,导入数据库表,和unit.js。获取时间
const DB = wx.cloud.database().collection("cows")const TB = wx.cloud.database().collection("log")let i = 0let id=""var util = require("../utils/util.js");
三。写入签到签退按钮的.js代码
now(){ var that = this; console.log(that.data.nows) if (i == 0 && that.data.now =="签到"){ i=1; var time1 = util.formatTime(new Date()) DB.add({ data: { statctime:time1, endtime: "" }, success(res) { id=res._id console.log("签到成功", res._id) }, fail(res) { console.log("签到失败", res) } }) that.setData({ statc: time1, now: "已签到", color: "rgb(199, 194, 194)" }) wx.showToast({ title: "签到成功" }) var timeout= setTimeout(function(){ wx.switchTab({ url: "/pages/arrary/first/ones/ones", }) },1000) } else{ wx.showToast({ title: "已签到,请勿重复签到", icon: "none" }) } }, nows(){ var that = this; if (i == 1 || that.data.now == "已签到" && that.data.nows == "签退"){ i=2; var time2 = util.formatTime(new Date()) DB.doc(id).update({ data: { endtime: time2 }, success(res) { console.log("签退成功", res) }, fail(res) { console.log("签退失败", res) } }) that.setData({ ends: time2, nows: "已签退", colors: "rgb(199, 194, 194)" }) wx.showToast({ title: "签退成功" }) } else { if(i==2){ wx.showToast({ title: "已签退,请勿重复签退", icon: "none" }) } else{ wx.showToast({ title: "请先签到,签到之后方可签退!", icon: "none" }) } } },
第四。页面监听签退后会跳出签退页面。重新进入需要监听。
var that = this wx.cloud.callFunction({ name: "getopenid", success(res) { var openid = res.result.openid DB.get({ success(e) { console.log(e) var lenths = e.data.length; console.log(lenths); var time1 = util.formatTime(new Date()) for (var i = 0; i < lenths; i++) { if (e.data[i]._openid == openid && e.data[i].statctime.substring(0, 10) == time1.substring(0, 10)) { var st = e.data[i].statctime var en = e.data[i].endtime that.setData({ statc: st, now: "已签到", color: "rgb(199, 194, 194)", }) } } }, fail(e) { console.log("查询失败", e) } }) console.log("获取成功", res.result.openid) }, fail(res) { console.log("获取成功", res) } })
到这,一个简单的签到页面就完成了。如有不对的地方,小菜鸟期盼大神的指导。
希望对你们有用处。
总结
以上所述是小编给大家介绍的微信小程序实现二维码签到考勤系统,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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关键词: 微信小程序二维码签到考勤 微信小程序考勤签到