我们先来看细致的示例
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <meta charset="utf-8"/> <script type="text/javascript"> function draw() { var canvas = document.getElementById('SimpleCanvas'); if ( ! canvas || ! canvas.getContext ) { return false; } var context = canvas.getContext('2d'); context.font = 'normal 18pt "楷体"'; context.fillText('Hello HTML Canvas World!', 60, 200); } </script> </head> <body onload="draw()" style="background-color:#D0D0D0;"> <canvas id="SimpleCanvas" width="640" height="480" style="background-color:#FFFFFF;"></canvas> <div>Canvas Demo</div> </body> </html>
申明:
下面的代码是猎取canvas对象并猎取上下文。
var canvas = document.getElementById('SimpleCanvas'); if ( ! canvas || ! canvas.getContext ) { return false; } var context = canvas.getContext('2d');
下面是绘制字符的代码。指定要在font属性中绘制的字符的字体信息。运用fillText()要领在画布上绘制一个字符串。作为第一个参数绘制的字符串,画图最先的X坐标和Y坐标被给予第二个和第三个参数。
context.font = 'normal 18pt "楷体"'; context.fillText('Hello HTML Canvas World!', 60, 200);
运转结果
运用Web浏览器显现上述HTML文件。取得下图的显现结果。
接下来我们来看怎样变动笔墨的色彩
代码以下
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <meta charset="utf-8" /> <script type="text/javascript"> function draw() { var canvas = document.getElementById('SimpleCanvas'); if ( ! canvas || ! canvas.getContext ) { return false; } var context = canvas.getContext('2d'); context.font = 'normal 18pt "楷体"'; context.fillStyle = 'red'; context.fillText('你好,ki4网!!!', 60, 200); } </script> </head> <body onload="draw()" style="background-color:#D0D0D0;"> <canvas id="SimpleCanvas" width="640" height="360" style="background-color:#FFFFFF;"></canvas> <div>Canvas Demo</div> </body> </html>
申明:
变动文本色彩,须要设置fillStyle属性为文本色彩。
context.font = 'normal 18pt "楷体"'; context.fillStyle = 'red'; context.fillText('你好,ki4网!!!', 60, 200);
运转结果:
运用Web浏览器显现上述HTML文件。将取得以下图所示的结果,已绘制了赤色的字体。
以上就是怎样运用HTML5 canvas绘制笔墨的细致内容,更多请关注ki4网别的相干文章!