先画条直线,如下: <canvas id="myCanvas" width="1000" height="800"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d'); context.beginPath();
context.lineWidth="2"
context.strokeStyle="black"
context.moveTo(10, 10);
context.lineTo(100, 100);
context.stroke();
</script>不用clearRect(),怎么删除这条直线?htmlcanvas2d
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d'); context.beginPath();
context.lineWidth="2"
context.strokeStyle="black"
context.moveTo(10, 10);
context.lineTo(100, 100);
context.stroke();
</script>不用clearRect(),怎么删除这条直线?htmlcanvas2d
将看到直线被删除了。