Essential JavaScript Functions - Vigyaa

Delete Collection?

Are you sure you want to delete this collection permanently?


Delete Collection?

Are you sure you want to delete this collection permanently?

Everyone has a Story to Tell and an Experience to Share!

Let’s Start Writing


Essential JavaScript Functions

JavaScript is the essential skill for any Web developer Learn Essential JavaScript Functions in simple and easy steps starting from basic to advanced concepts with examples

JavaScript is actually a high level interpreted scripting language that necessarily conforms to the ECMAScript specification. This scripting language is used along with HTML5 as well as CSS3 is friendly used by the web developers for the purpose of development of responsive web applications which makes the website friendly to be browsed on any devices. This is the exact reason as to why JavaScript is being used readily in the recent times by the developers for web development.

Apart from being a client-side scripting language, JavaScript provides a lot of features which is of a great help to the users for the purpose of creating robust websites without the need of writing longer lines of code. In an addition to this, JavaScript is very much capable of reducing the time required for coding by the programmers with the use of a variety of functions that are pre-built.

Being a group of reusable code, the functions of JavaScript allow the programmers in making the codebase much modular and necessarily avoid writing the same piece of code time after time. Moreover, the developers can take a very good advantage of the pre-built functions of JavaScript. A few of the essential JavaScript functions are as listed below.

JavaScript functions

1) decodeURI

The decodeURI is a function that can be used for the purpose of identifying as well as decoding the standard components of the URI. The whitespaces, spaces and other similar characters in a URI gives rise to a number of parsing problems in the programming languages which are commonly replaced with the Unicode characters that are relevant with the use of the in built decodeURI function of JavaScript.

2) debounce

The debounce function is another useful JavaScript function that allows for a call back function that can be used more than once in the stipulated frame of time. This is of a great help at the time of assigning a call back function to the events that are frequently-firing. This function can help in significantly speeding up of events and can be used with a scroll, resize, or key event.

3) poll

It is a function that helps in making things much easier. It allows the users to periodically “poll” the server and ask for fresh information. The server simply responds and sends fresh information to the client. The best is that the whole process is automatic which makes sure that the users need not gave to manually check for the updates.

4) once

This function allows the developer to run a given functionality for a single time. 'once' runs for a single time for the page without running again for that same page which is beneficial in avoiding duplicate initialization. 'once' is used for calling a function and not at the time of defining the function. Most importantly, ‘once’ can be used with any of the existing functions including those that are in the external libraries.

5) toString

Many times, the developers need to validate a value by asking users for the purpose of confirming that the input was submitted. Thus, they require to display the values as string irrespective of their types of data. The 'toString' function is used with a number of objects for displaying their values as character.

6) prompt

At the time of designing a website, developers frequently require the users for inputting a specific value prior accessing the web page. This pre-built function plays a crucial role in helping the programmers by prompting the users to ask an input value with the help of a prompt box. Now, the users require to enter the value and click ‘OK’ or ‘CANCEL’ button for accessing the web page without which it is not possible.

7) alert

It is quite a simple JavaScript function but still it is used by both beginners as well as the experienced programmers. This function is of a great help to the programmers in conveying a specific message to the users with the help of a dialogue box.

Apart from these, there are a number of other functions is JavaScript that benefits the programmers in some or the other ways. 

Related Articles
The web world is progressing with a rapid pace and the data is quite stunning which states that there are more than about 1.8 billion websites and about 200 million websites that are active so far. In an addition to this, there are a number of innumerable new websites that make the competition quite robust and certainly beyond our mind. Now, with the advancement of technology, it is of immense importance to adhere to the new trends of web development so as to make sure that the websites get noticed properly and necessarily stands apart to deal with the stiff competition of the recent times. The use of the latest technologies for web development would be of a great help in the development of websites that are worthy enough of getting a global attention. So, let us learn about the most popular web development technologies in the year 2019 for the development of stunning websites which are as discussed below. Popular web development technologies in the year 2019 Artificial Intelligence or Bots Artificial intelligence as can be understood from the name is the intelligence that is displayed by the machines for mimicking the intelligence of the humans and performing a number of cognitive functions such as learning ability, collection of data, analysis of information, understanding emotions and solution to some of the most challenging problems. The artificial intelligence enabled communication, analytics solutions and multitask solutions are certainly the greatest trend in the year 2019. The chatbots or simply the bots powered by artificial intelligence would be quite effective in offering premium quality customer service in the time to come. Java Script Java Script is undoubtedly one of the most popular language for web development in the past years but still it continues to develop. The evolution of the frameworks, libraries as well as designs of Java Script with time certainly has a lot to offer the market of web development. This is exactly the reason as to why Java Script is one of the most preferred options of the web developers which not only provides immense flexibility but also the necessary power. Blockchain Blockchain technology is another of the popular technology for web development that provides very tight security. This technology is highly efficient and powerful which has the capability to revolutionise the overall web industry. This technology of blockchain offers tight security for the online transactions. Most importantly, blockchain technology does not require any intermediaries and promises to utilize standard data storage for the purpose of allowing the users to store data in various locations that too globally. Blockchain is all set to be the most secure web development technology in the time to come. Progressive Web Application The progressive we applications are necessarily one of the hottest trends in the year 2019. The modern web development applications load similar to the regular websites or webpages but their functionality is of a high level. With this web development technology, the pages are able to load almost instantaneously irrespective of the state of network and the choice of browser. This is because of the fact that they are built with progressive enhancement which is an extremely effective strategy for web designing that focuses on the core content of the web pages. Progressive web app makes sure that it is instant, independent and reliable experience to the users without any kinds of cache issues. Motion UI Motion UI is another of the trending web development technology for its dynamic graphics, superb animation and truly real impacts on usability. This would be even more popular because of the rising demand for interactive web design. Motion UI is just ideal for the developers to tell a visual story at the time of communication with the users making use of a variety of techniques and tools. Most importantly, Motion UI is a sustainable library that easily allows seamless transition effects on the interface of the user. It is rapidly gaining a lot of popularity and is expected to be even more popular. Single Page Application Single page application is another popular web development application that is trending in the year 2019. This application is based on Java Script that works quite well on the user devices. The single page application plays a crucial role in the boosting up of the performance with minimized interruptions during the loading and unloading of pages. It also decreases the overall time required for the purpose of web development by simply responding to navigation actions without the creation of a request for fetching new HTML from the side of the server. In an addition to this, the single page application is just great for the purpose of developing completely responsive websites and hence a highly preferred choice of the developers. Thus, now it can be clearly understood as to what are most trending web development technologies of the year 2019.
By lasya Bookmark this collection to read later

Reference Image