By — HtmlCssMonk
Although it may look very simple and straightforward to new programmers, it has several features and “gotchas” that may leave you scratching your head, wondering why your code doesn’t work.
These things happen due to unclear basics.
A simple loop like for, which or do while is used many times in a single program. Loops are very basic things inside programming. If you are not clear with the looping and other basics, it is really very hard to code and even get a chance to get hired for a company.
It is very important to brush up your basics as they give you a strong base on top of which you can build the complex logic of a solution and strong reputation.
So, Learn and practice the basics !
2. Use Object-Oriented Approach
The object-oriented approach is the most famous approach used today in programming. An object becomes a basic entity then. This object is then taken as a base and used to apply properties and functions to the page.
For example, I create an object car. This object can be wrapped with many functions such as color, specifications, price, etc and everything that we do is on this object. We can select a car. Colour (“red”) to change the car color to red. Similarly, we can change the price by car.Price(“50”). An object is a base for everything that you do in the programming language.
3. Understand DOM
4. Use Functions To Define Different Modules
A functional approach is a great approach in programming because it divides your program in the modules that work together but is still apart.
Let me take an example to clear it out. There is a function to calculate Root Mean Square of the numbers. For this, you need to square the numbers, take their mean and their take square root of the mean. There are three steps involved in it. Therefore, we can make use of three functions. But see, all these functions are interlinked. The output of one goes to another and we get the final answer then.
Now, let’s say instead of three functions, you are using only one function to calculate RMS using various variables. As you see, the final answer is wrong. It will become really hard for you now, to check where what went wrong in such a big function. Instead, having three small functions will help you analyze quickly.
5. Error Handling
If you are into coding, your code is prone to errors. Normally, if you are working on a big project, errors are a common thing. And they should be. They open other possibilities that you might not have thought about while writing the code. But these errors are needed to be handled correctly or else they disturb the flow of the program.
Now, console.log is a conventional method to log errors. But they are extensive and time-consuming. To handle the errors more efficiently, you can use the Error Objects. An error object looks like,
const err = new Error(‘Please improve the time complexity of the code’)
console.log(err.message) // please improve your code
This gives you the power to display an error message too. You can also use try, catch and finally to apply validations on your code. If an error is found in the code in the try block, you can jump to catch block to either execute an error code or display some message. Finally, block executes the code in all the cases, whether there is an error or not. A sample code is given below:
catch (Exception e)
6. Understand The Code Of Others