<view class="container">
<button bindtap='getScancode'>点击扫码登陆</button>
<view wx:if="{{result !=''}}">
<view>扫码的内容:{{result}}</view>
</view>
</view>
//index.js
//获取应用实例
const app = getApp()
Page({
data: {
result: ''
},
onLoad: function() {
},
getScancode: function() {
var _this = this;
// 容许从相机和相册扫码
wx.scanCode({
success: (res) => {
var result = res.result;
_this.setData({
result: result,
})
}
})
}
})
setTimeout(function () {
//要延时执行的代码
}, 1000) //延迟时间 这里是1秒
document.write() # 取字符串长度