JavaScript Array() constructor is used to create Array objects. The constructor property returns the function that created the Array prototype.
array.constructor In JavaScript, the array.constructor property returns a reference to the constructor function that created the array. It allows you to access the constructor function that was used to create the array object.
const fruits = ['apple', 'banana', 'orange'];
console.log(fruits.constructor); // Output: [Function: Array]
Use JavaScript Array constructor property
Simple example code constructor property.
<!DOCTYPE html>
<html>
<body>
<script>
let languages = ["JavaScript", "Java", "Python"];
let res = languages.constructor;
console.log(res)
</script>
</body>
</html>
Output:
Array constructor with a single parameter
It’s important to note that when using the Array constructor with a single numeric argument, it specifies the length of the array rather than the actual values of the elements.
let fruits = new Array(2);
console.log(fruits.length); // 2
console.log(fruits[0]); // undefinedArray constructor with multiple parameters
When using the Array constructor with multiple parameters, each parameter is treated as an individual element of the array.
let fruits = new Array('Apple', 'Banana');
console.log(fruits.length); // 2
console.log(fruits[0]); // "Apple"You can pass any valid JavaScript expression as a parameter to the Array constructor, not just simple values. For instance:
const myArray = new Array(1, 2 + 3, 'Hello', true);
console.log(myArray); // Output: [1, 5, 'Hello', true]
Do comment if you have any doubts or suggestions on this JS Array topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version