Comparing and combining

===, !==, >=, !, &&, ||, ? :, and more — 10 exercises

Exercise 1 / 10

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Exercise 1/ 10

===

RuleWhether left and right are the same (true / false)

Data（members）

const members = [
  { id: 1, name: "Emma", plan: "Paid", age: 28, points: 120, nickname: "Em" },
  { id: 2, name: "Jack", plan: "Free", age: 17, points: 0 },
  { id: 3, name: "Lily", plan: "Paid", age: 35, points: 80, nickname: "Lil" },
  { id: 4, name: "Tom", plan: "Free", age: 20, points: 300 },
]

Example

// The names of members on the "Paid" plan
members.filter((m) => m.plan === "Paid").map((m) => m.name)

→ ["Emma", "Lily"]

The ids of members who are exactly 20

In plain words：Look at each member one at a time, keep only the ones where "Is the age the same as 20?" is true (filter), and make an array of just their ids (map)

Expected result[4]

JavaScript

Solve it to continue