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'?'show':'hidden'}}">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'?'show':'hidden'}}">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'?'show':'hidden'}}" 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"
   })
  }
 }