点击filter()方法没有反应
function filter(){
var imageData = contexta.getImageData(0,0,canvasa.width,canvasa.height);
contextb.putImageData(imageData,0,0,0,0,canvasb.width,canvasb.height);
}
function filter(){
var imageData = contexta.getImageData(0,0,canvasa.width,canvasa.height);
contextb.putImageData(imageData,0,0,0,0,canvasb.width,canvasb.height);
}
2015-08-24
举报