As a hugely popular client-side scripting language,
JavaScript does not need any introduction. In addition to being used as part of
web browsers, JavaScript also controls the web browsers, effectuates user
interaction, facilitates asynchronous communication, and delivers customized
content to users. So most web developers use JavaScript coding to reduce the
time and effort required for building large or complex websites. The web
developers also have option to use several JavaScript frameworks to effectuate
and speedup web development.
JQuery is a widely used cross-platform JavaScript library.
Despite being open source, jQuery is easy to use, fast and concise. The API
provide by jQuery works seamlessly on major web browsers. Also, the
feature-rich JavaScript library makes it easier for web developers to
manipulate HTML documents, handle events, create animations, select DOM
elements, and build AJAX application. At the same time, jQuery can also be used
for creating a variety of plug-ins by taking advantages of the JavaScript
library.
Thus, the modern web developers have option to use
JavaScript and jQuery either independently or side by side. However, it is also
important for the programmers to understand some of the major differences
between JavaScript and jQuery.
4 Important Differences between JavaScript and jQuery
1) Programming Language and Library
As a dynamic programming language, JavaScript supports
object-oriented, structured, functional and imperative programming styles. The
first-class functions and dynamic typing also make JavaScript categorized as a
prototype-based scripting language. On the other hand, jQuery is a JavaScript
library. The framework makes it easier for developers to accomplish a number of
common web tasks like HTML document manipulation, event handling, animation,
DOM element selection and AJAX application development.
2) Scripting Time
When a web developer decides to use straight JavaScript, he
has to write additional code to accomplish several tasks. He further has to put
extra time and effort for debugging and fixing browser compatibility issues.
But jQuery allows developers to take advantage of existing scripting. So they
can use the scripting existing in jQuery to accomplish a number of web tasks
without writing longer lines of code. Thus, jQuery makes it easier for web programmers to save the time and efforts required for building modern websites
and internet applications.
3) Simplification of Client-Side Scripting
As a client-side scripting language, JavaScript makes it
easier for developers to effectuate user interaction and deliver customized
content to users. But the developers have to write longer lines of code to
write a web application in straight JavaScript. So web developers often use
JavaScript development frameworks to accomplish the scripting functions easily
and quickly. As a cross-platform JavaScript library, jQuery comes with features
to perform the common scripting functionalities. So developers can use the
library to simplify the client-side scripting of HTML. The plug-ins, widgets
and UIs provided by the framework help web programmers to drastically reduce
development time.
4) Performance
Both JavaScript and jQuery run quite faster on the latest
web browsers and computers. But the speed of both JavaScript and jQuery is
impacted by use of older web browsers. As JavaScript can access the DOM faster
than jQuery, the programmers can easily curtail the overheads associated with
the library. However, jQuery makes it easier for developers to build
high-performing websites and internet application by availing functionality
independent of web browsers.
On the whole, JavaScript is a dynamic and feature-rich
programming language, whereas jQuery is a library of JavaScript code. The
proficient JavaScript developers can easily use jQuery to accomplish a variety
of tasks without writing longer lines of code. However, they can still use
jQuery without being proficient in the popular client-side scripting language.
That is why; the developers need to choose JavaScript or jQuery according to
specific needs of the project.
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