Jul 24, 2016 · An empty array is strictly equal only to itself. More properly, an expression that evaluates to a reference to some particular empty array is only strictly equal to another …

arrays are objects, objects are truthy. just ask for array.length, if not zero, it will be truthy. when you explicitly convert to Boolean, the array turns into an empty string first, then the empty …

Apr 21, 2014 · See Object identity because both array create a new instance of array so comparing two different object is not equal. Your code is equivalent to: var arr1 = [], arr2 = []; …

Thus I prefer == 0 out of the two options you presented. The == performs implicit type coercion based on complex rules which few developers can follow. It should be avoided in all cases. …

May 15, 2018 · Because Array is type of object, the fact that an empty Array is conversed to true is correct. But in Loose Equality, [] == false is right. So, above bool = !!array code can be …

Dec 16, 2022 · When an empty array ([]) is cast to a boolean in JavaScript it equals true because it is an object, and all objects are cast to true. This is due to the fact that object variables are …

An empty array is useful when you want to represent a collection with no elements, whereas null represents the absence of a value entirely. To check if an array is empty, you can examine its …

Jul 22, 2010 · In a brief, there are two key points: The toString method of an empty array returns an empty string. An empty string coerces to zero using the unary plus operator or the Number …

In this article, we explored the concept of empty arrays in JavaScript, their importance in programming, and various techniques for handling them. It’s crucial to check for empty arrays …

Jul 26, 2016 · As you can see, the first straight equality checks behave as if an empty array is false, which is common in back end languages, such as Groovy. However, transposing an …