Vue cannot read data by using Axios solution

Today, after discovering that Axios was used in Vue, the data in the then method cannot be read, and always prompts cannot set property ' xxx ' of undefined

After finding a lap on the internet, we found a solution.

Workaround 1:

methods:{    tap:function() {        var self=this;        Axios.get (' xxxxxx ')        . Then (function(result) {            self.message= ' hehe ')         })    }}

Workaround 2:

Axios.get (' xxxxxxxxxxx '). Then (result)={    this. message= ' hehe '}) 

Vue cannot read data by using Axios solution