Eight JavaScript Hacks For Beginners

Peace Adekoya
5 min readJun 14, 2023
Photo by Gabriel Heinzer on Unsplash

JavaScript is a powerful programming language that can be used for a variety of tasks, from creating dynamic websites to developing complex web applications. As a beginner, you may find it challenging to grasp the various concepts and techniques involved in JavaScript programming. However, with some clever hacks, you can quickly gain a better understanding of the language and start creating impressive web projects.

Are you looking for some tips and tricks to help you get the most out of your JavaScript programming and make it fun? Here are eight JavaScript hacks for beginners that can help you get started with your JavaScript programming journey:

Use console.log to Debug Your Code

Debugging is an important part of programming, and it can be frustrating when your code doesn’t work as intended. Fortunately, JavaScript comes with a built-in debugging tool called console.log(). This function allows you to print messages to the console, which can help you identify where your code is going wrong.

For example, let’s say you have a function that is supposed to add two numbers together:

function addNumbers(a, b) {
return a + b;
}

If you call this function and it doesn’t return the expected result, you can use console.log() to print out the values of a and b to see what’s going wrong:

function addNumbers(a, b) {
console.log("a:", a);
console.log("b:", b);
return a + b;
}

This will print out the values of a and b to the console, so you can see if they are the values you expected them to be. You can use console.log() to debug any part of your code, and it can be a powerful tool for identifying and fixing bugs.

Use the Chrome Developer Tools

The Chrome Developer Tools are a set of tools built into the Chrome browser that allow you to inspect and debug your code. They can be a powerful tool for beginners, as they allow you to see what is happening behind the scenes in your code.

To open the Chrome Developer Tools, right-click on a web page and select “Inspect”. This will open the Developer Tools panel, which contains a variety of tools for debugging and inspecting your code.

Use the ES6 Arrow Function Syntax

ES6 is a newer version of JavaScript that introduces some new features and syntax improvements. One of the most useful of these is the arrow function syntax, which provides a more concise way of writing functions.

Here is an example of a traditional function:

function greet(name) {
console.log("Hello, " + name + "!");
}

And here’s the same function written using arrow function syntax:

const greet = (name) => {
console.log(`Hello, ${name}!`);
};

As you can see, the arrow function syntax is much more concise and easier to read. It is also more flexible, as it allows you to write functions with fewer lines of code.

Use the Ternary Operator for Simple Conditionals

The ternary operator is a shorthand way of writing if/else statements. It’s a powerful tool for beginners, as it allows you to write simple conditionals in a more concise and readable way.

Here is an example of a traditional if/else statement:

let isUserLoggedIn = true;
if (isUserLoggedIn) {
console.log("Welcome back!");
} else {
console.log("Please log in.");
}

Here is the same statement written using the ternary operator:

let isUserLoggedIn = true;
isUserLoggedIn ?
console.log("Welcome back!"):
console.log("Please log in.");

As you can see, the ternary operator allows you to write simple conditionals in a more concise and readable way. It is especially useful when you only have two possible outcomes for a given condition.

Use the Spread Operator to Manipulate Arrays

Arrays are an important part of JavaScript, and a spread operator is a powerful tool for manipulating them. The spread operator allows you to “spread” the contents of an array into a new array or function call.

Here is an example of how you can use the spread operator to combine two arrays:

let arr1 = [1, 2, 3];
let arr2 = [4, 5, 6];
let combinedArr = […arr1, …arr2];
console.log(combinedArr); // [1, 2, 3, 4, 5, 6]

As you can see, the spread operator allows you to easily combine two arrays into a single array.

You can also use the spread operator to pass an array as arguments to a function. Here’s an example:

let arr = [1, 2, 3];
function sum(a, b, c) {
return a + b + c;
}
let result = sum(…arr);
console.log(result); // 6

As you can see, the spread operator allows you to pass an array as arguments to a function, which can be a powerful tool for manipulating arrays.

Use Template Literals for String Interpolation

Template literals are a newer feature of JavaScript that allows you to embed expressions inside of string literals. This is useful for creating dynamic strings that include variables, functions, or other expressions.

Here is an example of a traditional string concatenation:

let name = "John";
let message = "Hello, " + name + "!";
console.log(message); // "Hello, John!"

And here is the same string using template literals:

let name = "John";
let message = `Hello, ${name}!`;
console.log(message); // "Hello, John!"

As you can see, using template literals is more concise and easier to read.

Use Destructuring to Extract Values From Objects and Arrays

Destructuring is a feature of JavaScript that allows you to extract values from objects and arrays and assign them to variables. This can be a powerful tool for working with complex data structures.

Here is an example of destructuring an object:

let person = { name: "John", age: 30 };
let { name, age } = person;
console.log(name); // "John"
console.log(age); // 30

And here is an example of destructuring an array:

let numbers = [1, 2, 3];
let [first, second, third] = numbers;
console.log(first); // 1
console.log(second); // 2
console.log(third); // 3

As you can see, destructuring allows you to extract values from objects and arrays in a more concise and readable way.

Use the Array.foreach() Method to Iterate Over Arrays

The Array.forEach() method is a built-in method for arrays that allows you to iterate over the elements of an array and perform an action on each element. This can be a useful tool for working with arrays.

Here is an example of using the Array.forEach() method to log each element of an array:

let numbers = [1, 2, 3];
numbers.forEach(function(number) {
console.log(number);
});

This will log each element of the numbers array to the console.

Wrap Up

These are some helpful JavaScript performance tweaks and pointers you can utilize in your day-to-day coding activities. Given that different situations and circumstances will arise while building a web application or software, they do not always need to be used. Please share any more tricks you may have in the comments area.

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Peace Adekoya

Writing engaging content (landing pages, product descriptions, sales copy, blog posts, etc.) that helps increase visibility, attract leads, clicks, conversion.