如何清空微信小程序input值

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: ”    })},