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How to insert JavaScript into web pages

You have learned everything there is to know about HTML and CSS to start building your static website and now you would like to make it dynamic but you don't know how to insert JavaScript into web pages; right? Don't worry! Inserting the scripts into html files is really a breeze. If you read this article, in the next five minutes you will discover all the methods for inserting JavaScript into html files. How to insert JavaScript into HTML file JavaScript need HTML file to work.  Like CSS all methods of inserting JavaScript into a Web Page can be divided into two sections; add the scripts inside the TAG of  HTML file or by calling them externally. In detail we can insert JavaScript: Directly into Body of the HTML file. In the Head Tag and recall it in the body. With a relative or absolute external reference. Insert JavaScript into HTML file We will see an example of how to insert JavaScript shortly but first let's focus on when it is useful to do an explicit or implicit ...
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The syntax of the JavaScript language

Each programming language has very specific rules to follow and the syntax of the JavaScript language makes no exceptions; so if you want to learn how to program for the Web "client-side", you have to write the code correctly, otherwise, it cannot be interpreted by the Browser. JavaScript is a scripting language that makes a Web page dynamic; the script code must be inserted inside the HTML tags allowing the Browser to interpret it. The processing phase is carried out locally and not by the server, using the power of the PC; this as you can guess is more advantageous. Introduction to JavaScript Learning the syntax of JavaScript is the first step in working with the elements of the HTML language via ID; exploiting the objects of the DOM (Data Object Model) in the Browser. JavaScript allows us to make a web page interactive and dynamic but in detail, we can do: Mathematical calculations. Change the graphic aspects of a web page in real-time. Check the data in a form before it i...
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The Java language

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