You can pass one or more values to a function, but that has been made much easier and streamlined with the advent of ES2015 - 2018 standards. Let’s start with a simple function. 1 2 3 4 5 6 function sum(x, y) { return x + y; } const summer = sum(3, 6); console.

A Javascript function returns one and only one value. 1 2 3 4 5 6 function sum(x, y) { return 3 + 39; } let life = sum(3, 39); console.log(life); // 42 I bet you already knew that not returning a value from a function, would return ‘undefined’.

AND (&&), Not (!), OR (||) are logical operators in Javascript. You will see that they are the only operators that make up for the entirety of one’s life experiences. Logical operators evaluate two values or expressions, and provide a true or false result. Let us see some examples to know the rules of the game.

Equals (==), not equals (!=), greater than (>), lesser than (<) - Javascript comparison operators cannot get more simple. Let’s dissect these operators a bit. Comparison operators are the ones that you use to.. well, compare. For example: 1 2 3 4 5 6 7 let numCoffee = 3; if (numCoffee < 2) console.

Know how you can use a Javascript object and its props. Javascript objects have properties or props. As you would have seen in the post about objects and primitives, object operations are quite easy. Though objects can mean more than a few things in Javascript, we will limit discussion of an object to the ** real real ** object.

Get to know all the practical knowledge about Javascript primitives and objects. In JavaScript, objects are king. If you understand objects, you understand JavaScript. - W3 Schools Everything except primitives is an object in Javascript. A couple of days back, we were talking about Javascript having the following primitives: bool, number, string, undefined and null.

Don’t know how to type? Get a typewriter. I always wanted to say that. But, if indeed you don’t know types - you can always head over to Javascript types to know more**. So, you know there are types. And, you also know that there can be many a problem in the lousy world of loose typing.

This one thing I never said ever - “once you type, you cannot un-type”. Yep, I make up words and compete on how to level up in my eating my own words. Even if I allegedly uttered those words (which are totally unoriginal anyway), I happily don’t abide by them. I continue to use Javascript without types with all fervour (and have had a stint with typeless / loosely-typed scripting languages).

Imagine you are in need of a complex if/then routine. No, not the below.. 1 2 3 const smart = true; if (smart) console.log("I am smart"); else console.log("I am not so smart"); .. but more of.. 1 2 3 4 5 6 7 8 9 10 11 12 13 function sum(a, b) { let smartMessage; if (a + b <= 0) smartMessage = "Negative numbers are not known and cannot be computed.

Oh.. why? Why should we work on theoritical algo problems when we could develop the next Instagram or Salesforce.com? Because, son - you have to learn the different paths to glory. Why take the longer path when it can be shorter? That aside: let us look at multiple ways of reversing a string in Javascript.

Yes. Now, go back to work.. may be? What the heck is this? I am sure you used something called if/else? const sum = a + b; let result; if (sum > 100) result = "too high"; else result = "just right"; Instead of the “elaborate” syntax, we can just shorthand it.

Frameworks in Javasripts make your life easy. A Javascript frontend framework encapsulates libraries, code structure, tools and utilities. What a framework contains is left to the philosophy of that framework and the community built around the framework. Javascript world today has numerous frameworks that are company or community maintained. We will delve further in that topic, but first.

Javascript has and always have people who fight about anything and everything. I am always on the one side or the other, trying to raise the pitch whenever I can. After all, what is life if there is no stupidity? We should get annoyed, irritated, angered and humiliated at every instance possible.