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: