Vue data update view does not refresh solution

Solution 1 : this.$set()

this.$set(要操作的对象或数组, 要新增或者修改的数组或对象key, 对应的值)

Solution 2 : Force refresh the page

this.$forceUpdate（）

Solution 3: Object.assign (use the feature of modifying the stack to trigger view updates)

Object.assign can copy and synthesize a new object, so we only need to merge the values ​​to be modified into a new object and assign it to the object or array in data. In this way, the stack pointer is modified and the view update is triggered.