js生成图片

var image = new Image();var c = document.getElementById("myCanvas");var ctx = c.getContext("2d");var img = document.getElementById("scream");ctx.font = "10px Arial";function createImg(name, zuowei, color) { ???// ?姓名 ???ctx.fillText(name, 93, 373); ???ctx.fillText(name, 393, 370); ???// ?座位号 ???ctx.font = "bold 20px Arial"; ???ctx.fillText(zuowei, 216, 350); ???ctx.fillText(zuowei, 393, 350); ???// ?座位颜色 ???ctx.font = "bold 20px Arial"; ???ctx.fillText(color, 264, 350); ???ctx.fillText(color, 441, 350); ???// ?生成图片 ???image = c.toDataURL("image/png"); ???return image;}ctx.drawImage(img, 0, 0, 550, 520);var src = createImg(name, zuowei, color);$(‘#box‘).attr(‘src‘, src);