In JavaScript, "==" and "===" are comparison operators used to compare values or variables. The main difference between them is that "==" (double equals) checks for equality of values, whereas "===" (triple equals) checks for both equality of values and types. When using "==" to ...
What is the difference between == and === in JavaScript?Craig Buckler
It is quite common to confuse null and undefined, but there is an important difference between them. null Simply put, null is a JavaScript keyword that indicates the absence of a value. Surprisingly, if you run the following in your firebug console: console.log( typeof null ), you will ...
Originally published in the A Drip of JavaScript newsletter. One of the unintuitive things about JavaScript is the fact that there are constructors for each of the primitive value types (boolean, string, etc), but what they construct isn't actually the same thing as the primitive....
=== is used for checking strict equality, both type and value are checked. == Performs type coersion, i.e, 2 values are compared only after converting them into common type first one says: hey, A equals B (Just value, no matter if A is a string and B is a number) and the secon...
In JavaScript, null and undefined are two special values that indicate the absence of a value. Although they are often used interchangeably, there is a subtle difference between them. What is undefined in JavaScript? undefined is a value automatically assigned to variables that have not been initi...
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What is the difference between & and && in C? Here we will explain difference between Bitwise AND (&), Address of (&) and Logical AND (&&) operators in c programming language.
Why is there such a difference? Let's take a look at the difference in design philosophy from useEffect React and Vue . Welcome to join the human high-quality front-end framework group , with flying Differences between Vue and React When Hooks first came out, it was seen as an alternative...
So, what is the difference between a normal function and an arrow function? 🤔️ 1. this points to In JavaScript, thethisis a basic and important knowledge point. 1.1 Ordinary functions In ordinary functions,thisis dynamic, and its value depends on how the function is called. There are...