箭头函数可以替换let _this = this

let _this = this

let _this = this;
            _this.$axios.get("https://jsonplaceholder.typicode.com/posts")
                .then(response => {
//                    console.log(response);
                    _this.blogs = response.data.slice(0, 15);

                })

箭头函数

.then(response => {
                        console.log(response);
                        this.submitShow = true
                    })

明显箭头函数比let _this = this简单得多