本文主要包含canvas,HTML5,h5等相关知识,匿名希望在学习及工作中可以帮助到您
1.HTML5中的Canvas标签的创建window.onload = function(){
createCanvas();
} function createCanvas(){ var canvas_width= 200, canvas_height = 200;
document.body.innerHTML = "<canvas id=\"canvas\" width=\""+canvas_width+"\" height=\""+canvas_height+"\"></canvas>";
}
2.HTML5Canvas标签绘制图形
var canvas_width= 500, canvas_height = 500;var mycanvas, context; window.onload = function(){ createCanvas(); drawRect(); } function createCanvas(){ document.body.innerHTML = "<canvas id=\"mycanvas\" width=\""+canvas_width+"\" height=\""+canvas_height+"\"></canvas>"; mycanvas = document.getElementById("mycanvas"); context = mycanvas.getContext("2d"); } function drawRect(){ context.fillStyle ="#FF0000"; //context.rotate(45);//旋转45度 //context.translate(200,200);//移动 //context.scale(2,0.5);//缩放 context.fillRect(0,0,200,200); }3.HTML5Canvas标签绘制图片
var canvas_width= 500, canvas_height = 500;var mycanvas, context; window.onload = function(){ createCanvas(); drawImage(); } function createCanvas(){ document.body.innerHTML = "<canvas id=\"mycanvas\" width=\""+canvas_width+"\" height=\""+canvas_height+"\"></canvas>"; mycanvas = document.getElementById("mycanvas"); context = mycanvas.getContext("2d"); } function drawImage(){ var img = new Image(); img.onload = function(){ context.drawImage(img,0,0); } img.src = "1.png"; }以上就是HTML5 canvas学习的实例介绍的详细内容，更多请关注微课江湖其它相关文章！