微信小程序实现基于三元运算验证手机号/姓名功能示例

<view class="fl_form" style="position:relative;padding-top:20rpx;">
 <text><text style="color:red;padding-right:10rpx">*</text>您的姓名</text>
 <input type="text" placeholder='请输入您的姓名' value="{{trueName}}" bindblur='userNameInput'></input>
 <text class="{{isName=='1'">姓名不能为空</text>
</view>
<view class="fl_form">
 <text><text style="color:red;padding-right:10rpx">*</text>所属部门</text>
 <input type="text" placeholder='请输入所属部门' value="{{deparment}}" bindblur='userBranchInput'></input>
 <text class="{{isDeparment=='1'">部门不能为空</text>
</view>
<view class="fl_form" style="padding-bottom:20rpx;">
 <text><text style="color:red;padding-right:10rpx">*</text>联系电话</text>
 <input type="number" placeholder='请输入联系电话' maxlength='11' value="{{phone}}" bindblur='userTellInput'></input>
 <text class="{{isPhone=='1'" style="width:35%">请输入有效的手机号</text>
</view>

data: {
  trueName: "",
  deparment: "",
  phone: "",
  isName: "",
  isDeparment: "",
  isPhone: "",
 },
 //事件处理函数
 userNameInput: function (e) {
  //用户姓名
  if (e.detail.value) {
   console.log(e.detail.value)
   this.setData({
    isName: '',
    trueName: e.detail.value
   })
  } else {
   this.setData({
    isName: '1'
   })
  }
 },
 userBranchInput: function (e) {
  //所属部门
  if (e.detail.value) {
   this.setData({
    isDeparment: '',
    deparment: e.detail.value
   })
  } else {
   this.setData({
    isDeparment: '1'
   })
  }
 },
 userTellInput: function (e) {
  //联系电话
  if (/^1[3|4|5|6|7|8|9]\d{9}$/.test(e.detail.value)) {
   this.setData({
    phone: e.detail.value,
    isPhone: ""
   })
  } else {
   this.setData({
    isPhone: "1"
   })
  }
 }