html - 给动态生成的画布唯一ID

Question

var canvas = document.createElement('canvas'), canvasContext = canvas.getContext('2d');
canvas.width = image.width;
canvas.height = image.height;
canvas.id = ;
canvasContext.drawImage(image, 0, 0);
container.append(canvas);

我怎样才能给我所有生成的画布的唯一 ID

Answer 1

你不能只添加一个计数器吗？：

var counter = 0;
...
canvas.id = 'something_' + counter;
...
counter++:

或者对你来说是独一无二的？