解构对象数组变得不确定

Question

I have tried to destructure the Array object, getting undefined.

 var menus = [{
   food: "pizza",
   drink: "coke"
 }, {
   food: "burger",
   drink: "pepsi"
 }, {
   food: "sandwitch",
   drink: "coke"
 }, {
   food: "popcorn",
   drink: "coke"
 }];

 var {
   food: team,
   drink: sports
 } = menus;

 console.log({
   team
 });

Output: team is undefined.

It seems like a syntax issue.

Answer 1

You need to destructure an object inside the array.

You can use array destructuring with object destructuring (the 1st item in this case):

 const menus = [{"food":"pizza","drink":"coke"},{"food":"burger","drink":"pepsi"},{"food":"sandwitch","drink":"coke"},{"food":"popcorn","drink":"coke"}]; const [{ food:team,drink:sports }] = menus; console.log({team}); 

Or destructure a specific object in the array:

 const menus = [{"food":"pizza","drink":"coke"},{"food":"burger","drink":"pepsi"},{"food":"sandwitch","drink":"coke"},{"food":"popcorn","drink":"coke"}]; const { food:team,drink:sports } = menus[2]; console.log({team}); 

To get all values to a new array use Array.map() :

 const menus = [{"food":"pizza","drink":"coke"},{"food":"burger","drink":"pepsi"},{"food":"sandwitch","drink":"coke"},{"food":"popcorn","drink":"coke"}]; const teams = menus.map(({ food: team }) => ({ team })); console.log(teams);