Each of these tests may be tackled by novices, however a familiarity with JavaScript would be beneficial. If you already have some experience with JavaScript, you may find our basic course useful for brushing up on the fundamentals. We don't mandate any particular IDE, so feel free to use whatever works best for you. You are free to choose any setting you feel most at home in, or one that is recommended for your online JavaScript course. If you are stuck on a coding challenge, remember that you can always turn to Google for assistance, but you should give your own attempts at finding a solution a go first.
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1. Print All Even Numbers from 0 – 10
Make an effort to find the most time- and cost-effective way to resolve this issue. Think of loops that will need you to enter the fewest possible characters or instructions. Although it would be easy to just print the even numbers, you can also try to think of a technique to output them that would scale to the numbers 10, 000, or even 10,000.
2. Print a Table Containing Multiplication Tables
Okay, so let's start with the tables that so many of us had to learn in grade school. Please provide a printable table with the products of the multiplication tables (1–10). Can you, like in Challenge #1, come up with a practical approach that would be simple to extend to include the 12 times table?
3. Create a Length Converter Function
The ability to create a function will serve you well in a variety of contexts, and you'll soon be working on functions that are orders of magnitude more complex than the one you just created. However, a feature that can convert units of measure is very useful in many fields. The first step is to change the kilometres to miles. Input should be given in kilometres, and the function should provide the result in miles.
4. Calculate the Sum of Numbers Within an Array
You can solve this issue with whatever collection of integers you choose, so feel free to make your own array. Keep the reals and the exponents in separate arrays. Alternatively, you may experiment with arrays of varying sizes. If you've got the hang of this, go on to the somewhat more difficult bonus challenge down below. For an extra challenge at the intermediate level, try writing a function that returns the total for a given column or row.
5. Create a Function that Reverses an Array
If you want to work in the field of data science, this challenge will assist you immensely. As data manipulation is a major responsibility, laying the groundwork today will serve you well when dealing with massive datasets later on. Make a little progress here and there, and eventually you can make a big leap. To test your code, start small with an array of 5 integers and gradually scale it up.
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6. Sort an Array from Lowest to Highest
It's possible to write a function to implement this approach; however, you should test your code with arrays of varied sizes and structures. It's worth trying all-integer, all-negative, and all-decimal variants.
7. Create a Function that Filters Out Negative Numbers
This problem requires a function that accepts an array and returns another array as its result. However, if everything works as planned, the negative figures will be eliminated. Another activity that will be handy when sorting through data and trying to find methods to filter out "bad data."
8. Remove the Spaces Found in a String
Errors and extra spaces may also be removed from data to make it more presentable. This method accepts a string and returns it with the spaces stripped off. Consider the prospect of having to clean up consumer data as part of your work. This feature may be scaled to clean up information in certain fields, such as zip codes.
9. Return a Boolean if a Number is Divisible by 10
Here, you'll learn how to write a function that returns a Boolean value of "true" or "false." Whether or whether the entered integer is divisible by 10 should be checked before returning true. The default behaviour of your software should be to respond "false" if this is not the case.
10. Return the Number of Vowels in a String
Build a method that counts the number of vowels in a string and returns that number as an integer. As a means of training oneself to identify the characteristics of a dataset, this is an excellent exercise. Knowing what components make up a dataset (or even simply strings) can come in handy if you ever work with JavaScript in your professional life. If you're up for an additional challenge, try sending back the character count.
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