JavaScript Tutorial Guide for Beginners

Introduction



JavaScript is generally a programming language developed by Netscape business. In recent months, the language has gained quite a lot of attention because it helps web developers to change user behavior as well as site content in such a way that it is not possible to use standard Markup software or even CSS at all.

Using JavaScript on a web page allows the author to track how his client responds and operates on particular user behavior, inspects the application elements shown on the client, validates the form options before uploading them, reviews native browser information, sets cookies for different operations, applies date and time to the page, and even embeds basic mini-games on the website.

If you have a fundamental understanding of OOPS definitions and HTML, the full vocabulary is easy to grasp and understand.

Software and Knowledge Needed

Until starting with the new vocabulary, you need to have a good understanding of the HTML head and body areas, and only basic sentences are used to add images, implement hyperlinks and make paragraphs in the hypertext vocabulary. A basic text editor is a software you can use to get the JavaScript tour underway.

Users of Windows OS can go to Notepad or Notepad++, and use TextEdit or TextWrangler for Mac users. For productive compiling and running, the application will require a web browser (preferably Mozilla Firefox, or Google Chrome).

Getting Started

A Basic Program in JavaScript to print a specific document looks like:

<html>

<head>

<title>JavaScript example</title>

<script language="JavaScript">

<!--

document.write("My First JavaScript Program!");

//-->

</script>

</head>

<body> Hello World! </body>

</html>

Using "<! -"and" /- > "in the code above means that older client versions without JavaScript support don't view the code. This means the website will not be malfunctioning on outdated browsers.

Just like every other HTML script, just paste the above code into your Notepad document and save it with a ".php" extension. Simply right-click on the file after saving is complete, and pick "Open With" Pick a web browser from here (where appropriate, Mozilla Firefox). The algorithm would run on its own, and the result would appear in the browser window.


Points to Remember

JavaScript codes are often put in the HTML's "heart" section, but under the "ass" area you can use them.

Typically a JavaScript file begins with "< script language="JavaScript" > "tag and ends with" < /script > ».

A JavaScript will still be rooted in HTML code and will never be able to stand alone.


Alert Message Box

If you want to add a personalized message box to your site, then JavaScript can be used to build this quite quickly. The code to add a custom warning box is as below.

<body>

<script>

window.alert("This is JavaScript Alert Box!")

</script>

</body>

Similarly, you may add other alerts like:

1. Confirm Action

window. Confirm ("Do you want to leave this platform for sure?")

2. Prompt Action

Window.prompt("Not left blank "username field).

JavaScriptStyle is a perfect forum for beginners to learn a free JavaScript tutorial step-guide.


Related Tag - Laravel Tutorial

















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