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Introduction

Learn JS Today is your resource for taking your first steps in your journey to JavaScript knowledge. We have curated resources for your personal betterment.

Functions

A JavaScript function is a block of code designed to perform a particular task. That task could be anything like completing some sort of mathematical equation, displaying information, or making some animation occur. You can set parameters to the function to call them.

                    
                function multiplyThat(firstNumber, secondNumber) {
                    return firstNumber * secondNumber;
                }

                console.log(multiplyThat(3,5));

Objects

A JavaScript object is a collection of properties that make up the whole. For example, a car has multiple different pieces that fit together to make up the whole vehicle. Contents of an object will always be found within {}.

                    
                let car = {
                    make: 'Nissan',
                    model: 'Pathfinder',
                    year: 1998,
                    color: 'Green',
                    name: 'Alice',
                    beautiful: true
                }

                console.log(car.name);

Arrays

A JavaScript array holds information of any type. You can view information in a array by indexing it. To find the contents of an array, it's helpful for you to know that arrays begin at 0, not 1.

                    
                let cats = ['Beans', 'Gravy', 'Rupert', Zola, 'Loumi'];

                console.log(cats[0]);

For Loops

A For Loop in JavaScript loops through code for as many times as you want. As long as the conditions are still true, it will keep looping. It is possible to have an infinite loop, but no one needs that kind of negativity in their life.

                    
                for (i = 0; i <= 5; i++) {
                    console.log("The number is " + i);
                }

Conditionals

A Conditional Statement in JavaScript will do different things depending on the different conditions. If the condition is true, it will perform the specified action. If the condition is false, it will carry on to the next condition. If there are no more conditions, there may be an else statement to specify what to do if none of the conditions are true.

                    
                let favShow = "Parks and Rec";

                if(favShow == "Great British Baking Show") {
                    console.log("No soggy bottoms here!");
                } else if(favShow == "Parks and Rec") {
                    console.log("Bye bye, Li'l Sebastian!");
                } else {
                    console.log("Your favorite show isn't as good");
                }

Summary

In summary, JavaScript is as difficult as you make it. As soon as you understand some concepts, it is easy to delve deeper and learn more new things. JavaScript is always changing and becoming better. In order to stay relevant, you need to always be learning and challenging yourself.

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