我有简单的代码在画布元素中“绘制”:
function doFirst(){
var x = document.getElementById('canvas');
canvas = x.getContext('2d');
window.addEventListener("mousemove", rys, false);
}
function rys(e){
var xPos = e.clientX;
var yPos = e.clientY;
canvas.fillStyle="#000";
canvas.beginPath