微信小程序textarea,微信小程序辅助工具

wxml <view class="weui-cells weui-cells_after-title"> <view class="weui-cell"> <view class="weui-cell__bd"> <textarea class="weui-textarea" placeholder="请输入文本" style="height: 3.3em" maxlength='100' bindinput='userInput' /> <view class="weui-textarea-counter">{{length}}/100</view> </view> </view> </view>

这里要用bindinput

js data: { ... length: 0 }, //统计输入长度 userInput: function(e) { console.log("输入的内容---" + e.detail.value) console.log("输入的长度---" + e.detail.value.length) this.setData({ length: e.detail.value.length }) },