我做了个优惠卷领取的页面，输入手机号的，点击领取的时候,把用户的手机号和优惠卷id传到后台，现在我获取不到用户输入的手机号了，求大神指教 <view class="container">     <block wx:for="{{images}}"   >         <view class="item" >             <view class="viewimage">             <image class="slide-image" src="{{item.imgUrl}}"/>         </view>         <view class="inputArea">                 <text class="textw">联系方式</text>                         <input id="userPhone{{item.id}}" class="inputw"  bindinput="bindChange" placeholder=""  type="number" value="{{userPhone}}"/>                        <button type="" data-conponid="{{item.id}}"  bindtap="saveCoupon" class="lingqu">领取</button>             </view>         </view> </block> </view> js var mobile=""; bindChange:function(e,mobile){ mobile = e.detail.value; console.log(mobile) }, saveCoupon: function (e,mobile) { console.log(e) console.log(mobile); var that = this; console.log(that.data.userPhone) },