<!DOCTYPE html>
<html>
<head>
<meta name="description" content="HTML5 Canvas Graphics and Animation Video 1" />
<meta charset="utf-8">
<title>HTML5 Canvas Graphics and Animation</title>
</head>
<body>
<canvas id="canvas" width="600" height="600"></canvas>
<script src="app.js"></script>
</body>
</html>
/**
* Created by Answer1215 on 3/19/2015.
*/
window.onload = function() {
//var canvas = $("#canvas")[0];
//var canvas = document.getElmenetByTagName("canvas")[0];
var canvas = document.getElementById("canvas"),
context = canvas.getContext("2d");
canvas.width = 400;
canvas.height = 700;
//context.fillRect(10, 10, 100, 200);
/**/
context.beginPath();
context.moveTo(100,100); //without draw any line;
context.lineTo(300, 100);
context.lineTo(300, 200);
context.lineTo(100, 200);
context.lineTo(100, 100);
context.closePath();
context.stroke();
//context.fill(); //fill() will also close the path for you
//so if you use fill(), you don‘t need closePath(); but in case you forgot
//to close the path later, just remember to close it every times.
/**/
/**/
context.rect(100,100,100,300); //make a rect and stroke it
context.stroke();
context.fillRect(100,100,100,300); //fill rect
context.strokeRect(100,100,100,300); //draw rect
context.clearRect(100,100,100,300); //clean the canvas*/
};
时间： 2024-10-10 20:51:32