Canvas容器绘制直线
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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body style="margin:0px;">
<canvas id="myCanvas" width="200" height="100" style="border:1px solid;" onmousemove="cnvs_getCoordinates(event)"
onmouseout="cnvs_clearCoordinates()"></canvas>
<div id="xycoordinates"></div>
</body>
</html>
<script type="text/javascript">
function cnvs_getCoordinates(e) {
x = e.clientX;
y = e.clientY;
document.getElementById("xycoordinates").innerHTML = "Coordinates: (" + x + "," + y + ")";
}
function cnvs_clearCoordinates() {
document.getElementById("xycoordinates").innerHTML = "";
}
var c = document.getElementById("myCanvas");
var cxt = c.getContext("2d");
cxt.moveTo(10, 10);
cxt.lineTo(150, 50);
cxt.lineTo(10, 50);
cxt.lineTo(10, 10);
cxt.stroke();
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body style="margin:0px;">
<canvas id="myCanvas" width="200" height="100" style="border:1px solid;" onmousemove="cnvs_getCoordinates(event)"
onmouseout="cnvs_clearCoordinates()"></canvas>
<div id="xycoordinates"></div>
</body>
</html>
<script type="text/javascript">
function cnvs_getCoordinates(e) {
x = e.clientX;
y = e.clientY;
document.getElementById("xycoordinates").innerHTML = "Coordinates: (" + x + "," + y + ")";
}
function cnvs_clearCoordinates() {
document.getElementById("xycoordinates").innerHTML = "";
}
var c = document.getElementById("myCanvas");
var cxt = c.getContext("2d");
cxt.moveTo(10, 10);
cxt.lineTo(150, 50);
cxt.lineTo(10, 50);
cxt.lineTo(10, 10);
cxt.stroke();
</script>
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