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Javascript is a client-side programming language whose search engine is embedded in web browsers such as Internet Explorer, Netscape, Firefox, etc. This allows the processing engine to read and translate web pages containing javascript code when browsing.
Javascript first appeared in 1995, although it was then known as Livescript. This name was later changed to javascript.
Javascript was developed to add fun features to HTML pages. The HTML in it is boring and can't do much without displaying a webpage. Javascript editing, on the other hand, can provide a lot of fun features such as counting, allowing the user to interact with web pages, perform form verification, use objects on a web page, provide excellent viewing results, enable flexible functions and much more.
All of this provides the user with an improved user experience. Because javascript is a client-side language, all of these features are available in real time without the browser always pointing to the server. This prevents time delays and increases user satisfaction.
Let's take a look at some of the best things you can do with the javascript program:
Do the Maths
Javascript can be used to perform simple, advanced math calculations. This is especially important if you want your users to interact with your site by entering specific information that requires a certain type of calculation and displaying related content based on that result. For example, javascript can calculate loan repayments and display the correct result when a user enters the required loan amount on a site. In addition, javascript can also specify a date and time, a specific task time and perform complex calculations of date and time.
User interaction
Javascript on a web page can take user interaction and perform specific tasks in the form of events. Some of the most popular events are:
blurring
to change
click
ondblclick
onfocus
zonkeydown
zonkeypress
all
upload
onmousedown
onmousemove
without the mouse
over the mouse
onmouseup
to choose
move
Perform Form Verification
Javascript can verify and check user input to determine if it complies with a specific requirement. For example, you can check if the field is left blank, if the email address is in the correct format, if the zip code is in the correct format, etc. In most cases, if an error was made by a visitor to your site, a warning may indicate an error message that is appropriate for him or her.
Redirect Items to a Web Page
Javascript allows the user to change the content or styles of a web page through user interaction in the form of
the events mentioned above. For example, hovering over a certain text may make the image appear, the text on the navigation key may change in posting, etc.
Provide Visual Results
Javascript has many ways to provide visual effects on a web page that other programming server-side editing languages may not. A typical example of this might be the rollover buttons for a beautiful image.
Enables Powerful Tasks
Javascript, along with AJAX (JavaScript not compliant with XML), can be used to create powerful applications. An example of this is uploading dynamic content to a web page without updating the page.
In my next chapter, we will discuss more about the javascript program.
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