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#W3C HTML CSS JAVASCRIPT TUTORIAL HOW TO#
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JavaScript is the programming language of the Web. I may also expand this into another tutorial and show you how to create a nice menu using the technique.Start learning JavaScript with the w3schools course to improve your Web Development skills. I know the tutorial was pretty basic, but I hope that the example above gives you an idea of how this can be used. When the div is clicked it could expand with SEO rich content and links. Now if we wanted to add some quality SEO content to help the site rank we could put it in a hidden div so that it doesn’t distract the customer. Here is an example of something you could use this for. When you click the toggle link the hidden box will appear. You should not see the Div when the page loads. We will create a link that goes no where and add the onclick property below. CSS is designed to enable the separation of presentation and content, including layout, colors, and fonts. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript. Now all we have to do is create a link that will call the toggle function and pass the ID of the Div we want to toggle. Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML.
#W3C HTML CSS JAVASCRIPT TUTORIAL CODE#
Then if “display: block ” for the #hidden div we will change it to be “display: none ” else we will change the display to none.Īdd the code to your page in the head just below the style. Next we are using the Document Object Model to get the current state of the display attribute. The script above is creating the function “toggle” an passing the value “id”. As an alternative you can also try our non-DTD-based validator.
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If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available. Var state = document.getElementById(id).style.display ĭocument.getElementById(id).style.display = 'none' ĭocument.getElementById(id).style.display = 'block' This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. Below is the Javascript code that we will add the the Head section of the page. Basically this means that we can use this one function to show or hide more than one Div on the same page. We will pass the ID attribute of the Div to the function. In order to show the div we will need to add a Javascript function. Now when you preview the page you will not see the Div. To do this we will change the display to none in the CSS for the #hidden div. Ok now I will add some basic style to these boxes. One will be shown and one will be hidden. As long as the user can still see the content when clicking a button you are not displaying different information to the user than you are to the search engine.įirst we are going to start with a very basic page layout and create a 2 Divs. In theory hiding information in a Div is not against Google’s rules. Another reason would be for SEO purposes. You may want to create a drop down type menu or a box that will show more information when you click a link. There are a few reasons you may want to hide a Div in a website design. This tutorial will show you how to create a hidden Div and display it with the click of a link.