我的画廊有问题,我不知道如何解决。我根据本网站推荐 (http://webdesignerwall.com/demo/html5-grayscale/) 为我的照片使用灰度效果,在 FF 和 Chrome 中一切正常,但在 IE 中,所有图像都无法正确显示(重叠)。
我的代码是:
function grayscale(src){
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var imgObj = new Image();
imgObj.src = src;
canvas.width = imgObj.width;
canvas.height = imgObj.height;
ctx.drawImage(imgObj, 0, 0);
var imgPixels = ctx.getImageData(0, 0, canvas.width, canvas.height);
for(var y = 0; y < imgPixels.height; y++){
for(var x = 0; x < imgPixels.width; x++){
var i = (y * 4) * imgPixels.width + x * 4;
var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
imgPixels.data[i] = avg;
imgPixels.data[i + 1] = avg;
imgPixels.data[i + 2] = avg;
}
}
ctx.putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
return canvas.toDataURL();
}
// Fade in images so there isn't a color "pop" document load and then on window load
$(".item img").animate({opacity:1},0);
// clone image
$('a.thumb img').each(function(){
var el = $(this);
el.css({"position":"absolute"}).wrap("<div class='img_wrapper' style='display: inline-block'>").clone().addClass('img_grayscale').css({"position":"absolute","z-index":"998","opacity":"0"}).insertBefore(el).queue(function(){
var el = $(this);
el.parent().css({"width":this.width,"height":this.height});
el.dequeue();
});
this.src = grayscale(this.src);
});
// Fade image
$('a.thumb img').mouseover(function(){
$(this).parent().find('img:first').stop().animate({opacity:1}, 0);
})
$('.img_grayscale').mouseout(function(){
$(this).stop().animate({opacity:0}, 0);
});
我还附上了一张在 IE9 中显示照片的图片(http://postimage.org/image/8w0hnqnbl/ 提前致谢!