在input组件上绑定data-model="xxx" bindinput="inputWatch"，监听输入框输入：
<input placeholder="请输入6~12位密码" value="{{password}}" data-model="password" bindinput="inputWacth" type="password" maxlength="12"></input> inputWacth: function (e) { let item = e.currentTarget.dataset.model; this.setData({ [item]: e.detail.value }); }
当输入11位手机号后，验证码按钮变为可点状态；当3个输入框都有值时(密码大于等于6位，手机11位)，保存按钮变为可点状态。
<form bindsubmit="formPhone" wx:else> <view> <view> <view>密码</view> <input placeholder="请输入6~12位密码" value="{{password}}" data-model="password" bindinput="inputWacth" type="password" maxlength="12"></input> </view> <view> <view>新手机</view> <input placeholder="请输入新手机号" value="{{account}}" data-model="account" bindinput="inputWacth" maxlength="11" type="number"></input> <button catchtap="sendCode" data-account="{{account}}" disabled="{{codeDisabled}}">{{codeText}}</button> </view> <view> <view>验证码</view> <input placeholder="请输入验证码" data-model="verification" bindinput="inputWacth" maxlength="6"></input> </view> </view> <view> <button loading="{{loading}}" form-type="submit" disabled="{{disabled}}">保存</button> </view> </form> var app = getApp(); var util = require('../../../utils/util.js'); var ck = require('../../../utils/check.js'); import { weChatUser } from '../../../utils/api.js' Page({ /** * 页面的初始数据 */ data: { codeText: '验证码', // 按钮文字 disabled: true, // codeDisabled: true, currentTime: 60, account: '', // 注册-账号 password: '', // 注册-密码 verification: '', // 验证码 }, // 修改手机号 formPhone: util.throttle((e) => { let that = this, password = e.detail.value.password, account = e.detail.value.account, verification = e.detail.value.verification; // 判断手机号密码 if (!ck.checkPhone(account) || !ck.checkNull(password, '密码') || !ck.checkNull(verification, '密码')) { return } // 手机号密码验证通过后，发请求修改密码 let data = { "password": password, "phone": account, "verificationCode": Number(verification) } let result = weChatUser.updatePhoneBinding(data) result.then((res) => { if (res) { wx.showToast({ title: '修改账号成功', mask: true }) setTimeout(() => { wx.navigateBack({ delta: 1 }) }, 2000) } }) // 成功后，返回上一页 }, 1000), // 发送修改手机号的验证码 sendCode: util.throttle(function (e) { let account = e.currentTarget.dataset.account; // 判断手机号密码 if (!ck.checkPhone(account)) { return } ck.countDown(this) var data = { phone: Number(account) } let result = weChatUser.getVerificationCode(data) result.then((res) => { if (res) { wx.showToast({ title: '发送成功', icon: 'none', mask: true }) } }) }, 1000), // 监听 输入(控制按钮样式变化) inputWacth: function (e) { let item = e.currentTarget.dataset.model; this.setData({ [item]: e.detail.value }); let len = this.data.password.length; if (this.data.account && this.data.account.length === 11) { this.setData({ codeDisabled: false }) if (len >= 6 && this.data.verification) { this.setData({ disabled: false }) } else { this.setData({ disabled: true }) } } }, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { wx.setNavigationBarTitle({ title: options.title, }) } }) // check.js function checkPhone(phone) { // 判断手机号 if (!phone) { wx.showToast({ title: '请输入手机号', icon: 'none', duration: 2000 }) return false } if (phone.length < 11) { wx.showToast({ title: '手机号有误，请重新输入', icon: 'none', duration: 2000 }) return false } if (!(/^1[3456789]\d{9}$/.test(phone))) { wx.showToast({ title: '手机号有误，请重新输入', icon: 'none', duration: 2000 }) return false } return true } function checkNull(val, msg) { if (!val) { wx.showToast({ title: `请填写${msg}！`, icon: 'none' }) return false } return true } function countDown(self) { let currentTime = self.data.currentTime; self.setData({ codeText: currentTime + 's' }) let interval = setInterval(function () { self.setData({ codeText: (currentTime - 1) + 's' }) currentTime--; if (currentTime <= 0) { clearInterval(interval) self.setData({ codeText: '重新获取', currentTime: 60 }) } }, 1000) } module.exports = { checkPhone, checkNull, countDown } // util.js // 防止多次重复点击（函数节流） function throttle(fn, gapTime) { if (!gapTime) { gapTime = 1000; } let _lastTime = null; // 返回新函数 return function(e) { let _nowTime = +new Date(); if (_nowTime - _lastTime > gapTime || !_lastTime) { // fn(this, e); // 改变this和e fn.apply(this, arguments) _lastTime = _nowTime; } } } module.exports = { throttle }
总结