<div id="myCanvas"></div>#myCanvas { width:100px;height:100px; border: 1px dashed black;} var canvas = document.getElementById("myCanvas"); var context = canvas.getContext("2d"); context.lineWidth = 10; context.moveTo(0, 50); context.lineTo(50, 50); context.stroke(); canvas的用法是否仅仅对canvas标签起作用? 上面的代码无法在普通div内绘制直线,将div修改成canvas就可以。
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