mix2专题
某些微信浏览器（比如小米手机mix2 8.0，Android 6：ZTE 7 max）input标签file属性，无法选中图片或者调用相机
1.初始化wxConfig (appId,timestamp,nonceStr,signatur,jsApiList)window.localStorage.setItem('currentUrl', window.location.href);2.wx.checkJsApi({jsApiList: ['chooseImage'] // 需要检测的JS接口列表success: function