箭头函数试过了,也不行,麻烦帮忙解决下。
Cannot read property 'data' of undefined?Cannot read property 'data' of undefined?
Cannot read property 'data' of undefined?箭头函数试过了,也不行,麻烦帮忙解决下。
The arrow function has been tried, but it doesn't work. Please help solve it.
回答:
this是undefined? 打印下this看看
你这个请求嵌套太多层级了,并不是所有都是箭头函数this被覆盖了,函数内第一行重新定义下 let _this=this; 然后把下面的this都替换掉试下。