Truth Check Collection

Introduction

In this lab, we will dive into the world of JavaScript programming and explore various concepts and techniques used in web development. Through hands-on practice and exercises, you will learn how to write clean and efficient code, work with data structures, and create dynamic and interactive web pages. Whether you're a beginner or an experienced programmer, this lab will provide you with valuable skills and knowledge to take your coding abilities to the next level.

Skills Graph

Truth Check Collection Function

To practice coding, type node in Terminal/SSH.

Here's a function that checks if a predicate function is truthy for all elements of a collection.

• Use Array.prototype.every() to check if each passed object has the specified property and if it returns a truthy value.

const truthCheckCollection = (collection, pre) =>
  collection.every((obj) => obj[pre]);

Example usage:

truthCheckCollection(
  [
    { user: "Tinky-Winky", sex: "male" },
    { user: "Dipsy", sex: "male" }
  ],
  "sex"
); // true

Summary

Congratulations! You have completed the Truth Check Collection lab. You can practice more labs in LabEx to improve your skills.