javascript - How to use vue.js to implement deletion and undelete functions?

Question

How to use VUE to implement deletion and undelete functions? {Code...} Finally, by clicking the button, you can get the deleted information and the information that has not been deleted.

仅有的幸福 · Answer

When generating information, add the ID and use the ID to obtain the corresponding information

我想大声告诉你 · Answer

When deleting, push the value to be deleted to an array delList

When undoing, pop out the last deleted value

function TM(arr){
    this.arr = arr; 
    this.delArr = [];     

    this.remove = (val) => {
        this.arr = this.arr.filter(e => e !== val); 
        this.delArr.push(val); 
    }

    this.back = () => {
        var val = this.delArr.pop(); 
        this.arr.push(val); 
        return val; 
    }
}