wxml代码
input type='text' value='{{content}}' bindinput="getContentValue"/inputbutton catchtap="sendMsg"发送/buttonjs代码
data: { content: '',//input框绑定的值 },//获取content的值getContentValue: function(e){this.setData({ content: e.detail.value })},//点击发送后清空content值sendMsg: function(){this.setData({ content: '' })},
