上一章介绍了 微信小程序入门六本地缓存和搜索 ,这章介绍小程序的登录注册页面。主要有表单的验证,错误信息的提示,form表单的取值,get / post 请求 ,反馈交互提示框,页面跳转 以及 页面UI。
效果图:
注册页面:基本内容有账号,密码,确认密码,也可以添加 是否同意条款
wxml源码:
1. 顶部提示错误信息
2. 输入内容长度限制
3. 点击注册进行表单验证
4. 存在问题:输入框focus 无效果
- <!--
- 变量说明:
- showTopTips : 是否显示提示信息
- errorMsg : 错误信息
- windowHeight :设备的窗口的高度
- windowWidth : 设备的窗口的宽度
- account : 账号
- password :密码
- subPassword :确认密码
- -->
- <view class="page__bd">
- <view class="weui-toptips weui-toptips_warn" wx:if="{{showTopTips}}">{{errorMsg}}</view>
- <view style="height: {{windowHeight}}px; width: {{windowWidth}}px;" class="back_img">
- </view>
- <view style="position:absolute;top:{{windowHeight * 0.06}}px;">
- <image src="../../images/meBack.jpg" style="width: {{windowWidth * 0.4}}px;height:{{windowWidth * 0.4}}px; margin-left:{{windowWidth * 0.5 - 80}}px;border-radius:{{windowWidth * 0.2}}px;"></image>
- </view>
- <form bindsubmit="formSubmit" bindreset="formReset">
- <view class="login_info" style="top:{{windowHeight * 0.35}}px;width: {{windowWidth * 0.92}}px;">
- <view class="weui-cells weui-cells_after-title login_form">
- <view class="weui-cell weui-cell_input">
- <view class="weui-cell__hd">
- <view class="weui-label">账号</view>
- </view>
- <view class="weui-cell__bd">
- <input class="weui-input" placeholder="请输入账号" type="text" maxlength="20" value="{{account}}" focus="true" name="account"/>
- </view>
- </view>
- <view class="weui-cell weui-cell_input">
- <view class="weui-cell__hd">
- <view class="weui-label">密码</view>
- </view>
- <view class="weui-cell__bd">
- <input class="weui-input" placeholder="请输入密码" type="password" maxlength="10" value="{{password}}" name="password"/>
- </view>
- </view>
- <view class="weui-cell weui-cell_input">
- <view class="weui-cell__hd">
- <view class="weui-label">确认密码</view>
- </view>
- <view class="weui-cell__bd">
- <input class="weui-input" placeholder="请输入确认密码" type="password" maxlength="10" value="{{subPassword}}" name="subPassword"/>
- </view>
- </view>
- <view class="weui-btn-area">
- <button class="weui-btn" type="primary" formType="submit">注册</button>
- </view>
- </view>
- </view>
- </form>
- </view>
wxss源码:
1. 背景图片以毛玻璃的形式展示
2. form表单背景透明
- .back_img{
- background: url(../../images/meBack.jpg) no-repeat;
- background-size:cover;
- -webkit-filter: blur(10px); /* Chrome, Opera */
- -moz-filter: blur(10px);
- -ms-filter: blur(10px);
- filter: blur(10px);
- z-index:0;
- position:relative;
- }
- .login_info{
- z-index: 999;
- position:absolute;
- }
- .login_form{
- border-radius:5px;
- margin-left:8%;
- background-color: rgba(255,255,255,0.2);
- }
js源码:
1. form表单获取值
2. request请求
3. 交互反馈弹出框
4. 导航页面跳转传值
- var util = require(\'../../utils/util.js\');
- var app = getApp();
- Page({
- data: {
- showTopTips: false,
- errorMsg: ""
- },
- onLoad: function () {
- var that = this;
- wx.getSystemInfo({
- success: function (res) {
- that.setData({
- windowHeight: res.windowHeight,
- windowWidth: res.windowWidth
- })
- }
- });
- },
- formSubmit: function (e) {
- // form 表单取值,格式 e.detail.value.name(name为input中自定义name值) ;使用条件:需通过<form bindsubmit="formSubmit">与<button formType="submit">一起使用
- var account = e.detail.value.account;
- var password = e.detail.value.password;
- var subPassword = e.detail.value.subPassword;
- var that = this;
- // 判断账号是否为空和判断该账号名是否被注册
- if ("" == util.trim(account)) {
- util.isError("账号不能为空", that);
- return;
- } else {
- util.clearError(that);
- app.ajax.req(\'/register/checkLoginName\', {
- "loginName": account
- }, function (res) {
- if (!res) {
- util.isError("账号已经被注册过", that);
- return;
- }
- });
- }
- // 判断密码是否为空
- if ("" == util.trim(password)) {
- util.isError("密码不能为空", that);
- return;
- } else {
- util.clearError(that);
- }
- // 两个密码必须一致
- if (subPassword != password) {
- util.isError("输入密码不一致", that);
- return;
- } else {
- util.clearError(that);
- }
- // 验证都通过了执行注册方法
- app.ajax.req(\'/itdragon/register\', {
- "account": account,
- "password": password
- }, function (res) {
- if (true == res) {
- // 显示模态弹窗
- wx.showModal({
- title: \'注册状态\',
- content: \'注册成功,请点击确定登录吧\',
- success: function (res) {
- if (res.confirm) {
- // 点击确定后跳转登录页面并关闭当前页面
- wx.redirectTo({
- url: \'../login/login?account=\' + account + \'&password?=\' + password + \'\'
- })
- }
- }
- })
- } else {
- // 显示消息提示框
- wx.showToast({
- title: \'注册失败\',
- icon: \'error\',
- duration: 2000
- })
- }
- });
- }
- })
util.js 源码(封装了一些常用的方法,如果有不懂的内容,可以参考前面几章)
- function formatTime(date) {
- var year = date.getFullYear()
- var month = date.getMonth() + 1
- var day = date.getDate()
- var hour = date.getHours()
- var minute = date.getMinutes()
- var second = date.getSeconds()
- return [year, month, day].map(formatNumber).join(\'/\') + \' \' + [hour, minute, second].map(formatNumber).join(\':\')
- }
- function formatNumber(n) {
- n = n.toString()
- return n[1] ? n : \'0\' + n
- }
- var rootDocment = \'https://www.itit123.cn\';
- function req(url,data,cb){
- wx.request({
- url: rootDocment + url,
- data: data,
- method: \'post\',
- header: {\'Content-Type\':\'application/x-www-form-urlencoded\'},
- success: function(res){
- return typeof cb == "function" && cb(res.data)
- },
- fail: function(){
- return typeof cb == "function" && cb(false)
- }
- })
- }
- function getReq(url,data,cb){
- wx.request({
- url: rootDocment + url,
- data: data,
- method: \'get\',
- header: {\'Content-Type\':\'application/x-www-form-urlencoded\'},
- success: function(res){
- return typeof cb == "function" && cb(res.data)
- },
- fail: function(){
- return typeof cb == "function" && cb(false)
- }
- })
- }
- // 去前后空格
- function trim(str) {
- return str.replace(/(^\s*)|(\s*$)/g, "");
- }
- // 提示错误信息
- function isError(msg, that) {
- that.setData({
- showTopTips: true,
- errorMsg: msg
- })
- }
- // 清空错误信息
- function clearError(that) {
- that.setData({
- showTopTips: false,
- errorMsg: ""
- })
- }
- module.exports = {
- formatTime: formatTime,
- req: req,
- trim: trim,
- isError: isError,
- clearError: clearError,
- getReq: getReq
- }
登录页面也是一样的逻辑和代码,这里就不再贴出来,后续会提供源码(文中的请求地址可能已经失效,仅供参考)。
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