how to use the constructor function from the underscore library in javascript

Underscore is a popular JavaScript library that provides a wide range of utility functions for common programming tasks. One of the features that makes Underscore stand out is its support for functional programming and object-oriented programming (OOP) concepts.

Underscore provides a constructor function, which can be used to create custom objects with predefined properties and methods. Here's an example of how to use the constructor function from Underscore:

index.tsx
// Define a constructor function
var Person = _.constructor(function(name, age) {
  this.name = name;
  this.age = age;
});

// Use the constructor function to create a new object
var person1 = new Person('John', 30);
var person2 = new Person('Mary', 25);

// Access object properties
console.log(person1.name); // Output: John
console.log(person2.age); // Output: 25
368 chars
14 lines

In the example above, we define a constructor function Person using the _.constructor() method provided by Underscore. This method takes a single argument, which is a function that defines the properties and methods of the object.

Inside the constructor function, we use the this keyword to define the name and age properties of the object.

We then create two instances of the Person object using the new keyword and pass in values for the name and age properties.

Finally, we log the values of the name and age properties for each object, showing that they were correctly created and accessed.

Overall, the constructor function provided by Underscore is a useful tool for creating custom objects in JavaScript, and can be a helpful addition to any project that requires object-oriented programming concepts.