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我使用这种方式..多个实例:JavaScript的
var canvas = document.getElementById("canvas");
var contextGrayLine= canvas.getContext("2d");
var contextRedLine= canvas.getContext("2d");
contextGrayLine.lineWidth = 50;
contextRedLine.lineWidth = 20;
contextGrayLine.beginPath();
contextGrayLine.moveTo(10,10);
contextGrayLine.lineTo(500,10)
contextGrayLine.strokeStyle = "#AAA";
contextGrayLine.stroke();
我创建了帆布的两个实例,但redLine.lineWidth在写grayLine.lineWidth值......为什么会这样???
任何良好的资源来学习帆布的细节..和任何良好的lib用于开发画布代码..就像上面的一个。 – goutham 2010-09-11 10:54:19
https://developer.mozilla.org/zh/Canvas_tutorial – DevAno1 2011-05-17 12:32:58