HTML5 and CSS3, Second Edition
Joe asks: What About the id and Attributes? For many years, it was considered a best practice to associate table headers to col ...
<tablearia-describedby="schedule_instructions"> Including captions and additional descriptions with tables helps people wh ...
Part II New Sights and Sounds In the second part of this book, we’ll shift from talking about structure and interfaces to lookin ...
CHAPTER 6 Drawing in the Browser If we wanted an image in a web application, we’d traditionally open our graph- ics software of ...
Tip 17 Tip 17. Drawing a Logo on the Canvas Let’s begin our exploration of the HTML5 canvas by learning how to draw simple shape ...
Once we have the canvas’s context, we add elements to that context, which causes them to be rendered to the screen. For example, ...
We can create complex images on the canvas by combining simple shapes, lines, arcs, and text. Let’s do a more complex example by ...
We’re looking for an element on the page with the ID of logo, so we’d better make sure we add our canvas element to the document ...
Before we start drawing anything, we set the stroke and fill colors for the canvas. The stroke is the color of any lines we crea ...
these new shapes right where we want to without having to transpose the coordinates for every point on the shape. Let’s draw the ...
Adding Gradients to Objects We set the stroke and fill color for the drawing tools when we started, like this: html5_canvas/logo ...
html5_canvas/logo_gradient.html varcanvas= document.getElementById("logo"); ➤ if(G_vmlCanvasManager!= undefined){// IE 8 varG_vm ...
Tip 18 Tip 18. Graphing Statistics with RGraph The canvas is great for drawing images, but the fact that we build objects on the ...
Figure 18—A client-side bar graph using the canvas AwesomeCo is updating the company website, and senior management would like t ...
<pdata-name="GoogleChrome"data-percent="45"> GoogleChrome- 45% </p> </li> </ul> </div> We’re using ...
To build the graph, we need to grab the graph’s title, the labels, and the data from the HTML document and pass it to the RGraph ...
Figure 20—Our graph rendered on the canvas html5_canvas/javascripts/graph.js varcanvas= document.getElementById('browsers'); if( ...
html5_canvas/javascripts/graph.js ➤ $(document).ready(function(){ varcanvas= document.getElementById('browsers'); if(canvas.getC ...
Tip 19 Tip 19. Creating Vector Graphics with SVG We’re not limited to drawing graphics on the canvas. HTML5 documents support Sc ...
html5_svg/index.html <polylineid="line" points="0,4030,060,40285,40" style="fill:none;stroke:rgb(255,0,0);stroke-width:2"> ...
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