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Nowadays, JavaScript is very popular and flexible, and it is rated by GitHub as the most commonly used programming language in the world. JavaScript plays a leading role in Web development, with about 95% of websites using the language more or less.

Programmers appreciate JavaScript software development because they can use JavaScript to build highly interactive websites that customers like. They can create Web pages with hover menus, animations, videos, slides, and so on.

Good JavaScript developers know the context of the language. Hiring managers should ensure that job seekers have a good understanding of the following topics and can explain them in an easy-to-understand way.

Control flow

For JavaScript developers, control flow is a critical concept that defines the order in which a computer completes a set of statements.

The code has always been read sequentially: from top to bottom. However, some scripts use conditional structures to change the order in which the code is executed. JavaScript developers can incorporate these scripts into their own web pages to improve responsiveness and eliminate waste in communications.

For example, most companies now accept only applications and resumes submitted online by job seekers. Job seekers choose the position they like online, then upload their resume and explain their contact information and work experience by filling out the form.

JavaScript developers can write scripts to warn users that certain fields in the table cannot be empty, while rejecting illegal forms, which can make the site more responsive and avoid wasting time.

After failing to submit the form, the applicant can quickly jump to the missing blank box (with a prominent red mark below), fill in the information, and then resubmit the form.

Adding a simple script can provide real-time feedback to job seekers and prevent job seekers and HR professionals from wasting time looking up this information.

Experienced developers should be able to explain the advantages of conditional structures and explain in detail how to add such scripts to a web page.

Error handling

Mistakes are inevitable, especially in the field of software development, where even the most experienced and respected programmers sometimes make serious mistakes.

Research shows that on average, software engineers "produce 15-50 errors for every 1000 lines of code submitted".

Top developers understand that errors are inevitable, and they know how to find them and fix them. Interviewers can ask job seekers to talk about past mistakes in their work and how they found a solution, which can help them learn more about how they solve the problem.

Function

A major difference between JavaScript and other popular programming languages, such as Java and Python, is how functions are used. What makes JavaScript unique is that it allows programmers to treat functions as separate individuals in their code.

JavaScript programming is easier because developers can create shorter, easier-to-read code.

In addition, because JavaScript treats functions as basic objects, engineers can create higher-order functions and pass one function as an argument to another. In this way, programmers can increase the complexity of the application without having to write more code.

Range

An in-depth understanding of the scope of JavaScript will help engineers write more readable code and reduce errors at work.

JavaScript has two scopes: global and local. Global refers to a variable that you can read and edit from anywhere in the code no matter where it is located.

Local scope, on the other hand, refers to variables that can only be changed in a function. Only JavaScript developers who have an in-depth understanding of these terms can write good code and eliminate human error through strict access levels.

Before hiring a JavaScript developer, the manager must ensure that the developer has a solid understanding of the scope and how to improve the quality of the final software.

Software security

Data privacy is one of the most important challenges facing the high-tech industry. The number of data leaks continues to increase every year, with studies showing that hackers break into a computer "every 39 seconds".

Many companies choose to cooperate with foreign JavaScript development companies in order to find security experts for network development projects. However, every member of the development team has an unshirkable responsibility for software security.

Top engineers should have a solid understanding of the current main methods of ensuring software security and be able to clearly clarify the advantages and disadvantages of each method.

Hiring managers should ask job seekers to describe ways to ensure software security and explain in detail how they have ensured data privacy in previous projects.

User design

User design is a basic skill that all software developers should master. This is especially true for JavaScript developers, who are responsible for building beautiful and powerful websites that must resonate with consumers in terms of look and feel.

Although user interface and experience design used to be seen as the work of professionals, modern software development requires the integration of end-user considerations into all steps of the software development life cycle.

Good programmers can conduct basic market research, understand their target customers, keep abreast of the latest user design trends, and demonstrate how to successfully create intuitive and beautiful products in previous projects.

Thank you for your reading, the above is the content of "what abilities do JavaScript development professionals need to have". After the study of this article, I believe you have a deeper understanding of what abilities JavaScript development professionals need to have, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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