Drag and Drop images from another website to mine

问题:

I ran a quick google and SO search and found similar questions but none were well formed and most were old and looked abandoned (no answers, and no comments for a while). So here goes...

I want to be able to collect the url (only the url) of an image being dropped onto my site from another website.. (i.e. I have two chrome windows open. Window A has my application in it. Window B has imgur in it. I open an image click and drag it to my window and let go. Now I need to know the url of the image dropped on my page).

Here is the code I was working with for local files.

$(document).on('drop', function(e) {
    var data = e.dataTransfer || e.originalEvent.dataTransfer;
    console.log(data); // data.files is empty
    e.preventDefault();
    return false;
});​

Again I do not want to upload anything.. i'm not trying to do anything fancy... I just need to know the location of the image being dropped on the page from another website.

回答1:

Try this: http://jsfiddle.net/2Jet2/70/

$(document).on('dragover', function(e) {
     e.preventDefault();
});
$(document).on('drop', function(e) {
    e.preventDefault();
    e.originalEvent.dataTransfer.items[0].getAsString(function(url){
        alert(url);
    });
});​

I get "http://static3.flattr.net/thing/image/9/4/5/5/0/huge.png?1326712342" When I dragged that image from another browser window.

.getAsString takes a callback which gets the url as argument once it's called

Doesn't work on firefox

回答2:

You can use this

$(document).bind('drop', function (e) {        
    var url = $(e.originalEvent.dataTransfer.getData('text/html')).filter('img').attr('src');
    if (url) {
        jQuery('<img/>', {
            src: url,
            alt: "resim"
        }).appendTo('#yourId');            
    }
    return false;
})

回答3:

Based on Yunus's answer , this seems to work in FF:

e.originalEvent.dataTransfer.getData('text/html').match(/src\s*=\s*"(.+?)"/)[1]