Using Javascript, is there a standard way to get the absolute path of an image? img.getAttribute("src") only returns the src attribute as it was declared in the HTML.
Just do .src.
$('img')[0].src = '/images/foo.gif'
"/images/foo.gif"
$('img')[0].src
"http://stackoverflow.com/images/foo.gif"
$('img')[0].getAttribute('src')
"/images/foo.gif"
来源：https://stackoverflow.com/questions/3496491/getting-the-absolute-path-of-a-img