Knowledge of browsers and platforms - This is an essential prerequisite for all developers. They can apply new technologies only if they have an in-depth understanding of how browsers and platforms operate.
Functional programming (FP) paradigm - Programmers with knowledge of FP can write concise code that is easier to implement, test, and alter with minimal side-effects.
Understanding asynchronous programming - Unlike synchronous programming that leads to blocked instructions, asynchronous programming is used to execute all operations straight away. Knowing this concept can help developers improve the speed and performance of websites and applications.
Writing memory-efficient code - Developers should know how to write precise and efficient codes that do not cause memory leaks or slow web performance.
Business communication skills - Developers should express their thoughts clearly and convey their ideas with fellow developers, other teammates, and clients.
Industry updates - Developers who stay abreast of the latest technologies, tools, devices, applications are better able to deliver innovative and updated solutions to clients. Such professionals are crucial for organizations to outrun the competition and increase revenue. Skilled candidates should also be proficient in these topics - error handling, control flow, object-oriented approach, DOM manipulation, data models, and functional approach, among other topics.
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Comprehensive and intelligent reporting underscores the aspirant's strengths and weaknesses so that you can screen out unsuitable candidates and ensure that only those candidates having the required skills get selected for the given job description.
This test will help you in measuring:
Recommended experience bracket of target audience: 0.5-2 years
Difficulty level: Moderate
Key profiles the test is useful for:
In the <head> or in the <body> section of an HTML page, or in both.
The <script> tag is used for the same.
It's both frontend and backend; the reason is that it's used across the web development stack.
Some of the salient features are listed below:
JS is used to create appealing websites and to develop browser-based games and mobile apps for different operating systems.
The test() method checks for approximate string matching, and if there's a match, the method returns true; otherwise, it returns false.
In the event bubbling process, the element triggers the event and bubbles up to the contained elements in the hierarchy.
The NaN property is referred to as the "Not-a-Number" value.
The 'null' value refers to the intended omission of any object value.
The floor() method is used to round a number downwards to the nearest integer and return the result.
A prompt box is generally used to enable the user to input a value before accessing a page.
An operator either performs on single or multiple operands to produce a result.
What are some commonly asked JavasScript interview questions?
Here are some questions that interviewers usually ask during an interview:
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