javascript compare to null

There are two ways to compare JavaScript: the strict comparison operator and the conversion type comparison operator. For strict comparison operators (three =), the case for Ture is that only two operands have the same type, and for the widely used

When discussing the primitive data types in Javascript, most people know the basic knowledge, from String, Number to Boolean. These primitive types are quite simple and behavior is common sense. However, this article will focus more on the unique

False, zero, null, undefined, and empty string objects in Javascript In Javascript, We often come into contact with the five special objects mentioned in the question -- false, 0, empty string, NullAnd undefined. These objects are easy to use

This article mainly introduces the Null and Undefined primitive data types in javascript. If you need them, you can refer to the basic knowledge that most people know when discussing the primitive data types in JavaScript, from String, Number to

When discussing the raw data types in JavaScript, most people know the basics, from String,number to Boolean. These primitive types are fairly simple and behave in a common sense. However, this article will focus more on the unique original data

In JavaScript, we are often exposed to the 5 more special objects mentioned in the topic--false, 0, empty strings, null, and undefined. These objects are easy to use, so you have to be careful when you use them.Type detectionLet's come down and see

A bad time to answer, especially undefined, because this involves the realization of the principle of undefined. So, after thinking carefully, write down this article, please heroes to shoot bricks. Total known: null = = undefined However: null!==

When discussing the primitive data types in JavaScript, most people know the basic knowledge, from String, Number to Boolean. These primitive types are quite simple and behavior is common sense. However, this article will focus more on the unique

In JavaScript development, I was asked: What is the difference between null and undefined? It is hard to answer at a time, especially undefined, because this involves the implementation principle of undefined. In JavaScript development, I was asked:

In JavaScript, we are often exposed to the 5 more special objects mentioned in the topic-false,0, empty strings ,null , and undefined . These objects are easy to use, so you have to be careful when you use them.Type detectionLet's come down and see