4
我想保存圖像,PNG畫布,但是當我試試這個:保存HTML5畫布圖像作爲圖像
var myCanvas = document.getElementById("myCanvas");
var img = document.createElement('img');
var ctx = myCanvas.getContext ? myCanvas.getContext('2d') : null;
img.src = 'image.png';
img.onload = function() {
ctx.drawImage(img, 0, 0, myCanvas.width, myCanvas.height);
}
var data = myCanvas.toDataURL("image/png");
if (!window.open(data)) {
document.location.href = data;
}
我只得到沒有圖像的空白透明圖像。我究竟做錯了什麼?
謝謝,這就是它! – Jaap