Replace key name by its value

Question

 todo = {
"1.CoverLetterPage":"Hello",
    "3.JoiningDate":"Any Day",
    '4.Location':'Texas',
    '6.Leave':'AnyDay',
 };

I have called the list of keys in the list

done=[1.CoverLetterPage,4.Location,"3.JoiningDate,6.Leave]

What if i want to replace the values in the list 'done' by its value by typescript

Answer 1

Use map function to obtain values from todo object and overwrite done .

this.done = this.done.map( v => this.todo[v] )

Also your done array values should be in string form with qoutes around them like below:

done=['1.CoverLetterPage','4.Location','3.JoiningDate','6.Leave']