JavaScript Tutorial:

-JavaScript is the world's most popular programming language.
-JavaScript is the programming language of the Web.
-JavaScript is easy to learn.
-This tutorial will teach you JavaScript from basic to advanced.



JavaScript Introduction:

JavaScript Can Change HTML Content
-One of many JavaScript HTML methods is getElementById().
-The example below "finds" an HTML element (with id="demo"), and changes the element content (innerHTML) to "Hello JavaScript":


...


JavaScript Where to:

The script tag
-In html, JavaScript code is inserted between script and /script tags.




...


JavaScript Output:

JavaScript Display Possibilities
JavaScript can "display" data in different ways:
  • Writing into an HTML element, using innerHTML.
  • Writing into the HTML output using document.write().
  • Writing into an alert box, using window.alert().
  • Writing into the browser console, using console.log().

  • ...


    JavaScript variables:

    What are Variables?
    -Variables are containers for storing data (storing data values).
    -In this example, x, y, and z, are variables, declared with the var keyword:


    ...