How To Display Local Images Placed On Client Machine In Html Webpages
Solution 1:
Web pages aren't allowed to access file:/// URLs for security reasons, there is no way around this. However, if you make the same files accessible via another protocol - this can work. For example, you can put the following line into your add-on's chrome.manifest
file:
resource myaddon file:///C:/Images
This will create a resource protocol alias pointing to that directory - and the resource protocol can be used by webpages. Meaning that the pages will be able to use the image C:\Images\1.jpg
as resource://myaddon/1.jpg
.
You can also add resource protocol aliases dynamically. Just make sure you make only images accessible in this way and not all disk content - you might be opening a security hole otherwise.
Solution 2:
Use the File API which works on all browsers except IE.
A simple example of this would be:
functionShowImage(filepath){
var reader=newFileReader(); // File API object
reader.onload=function(event){
document.getElementById('myimage').src = event.target.result;
}
reader.readAsDataURL(filepath);
}
Solution 3:
the src attribute is always in the context of the server that is serving the HTML content. I don't think there is a way around that.
So in your example <img src="file:///C:/Images/1.jpg" />
if the host is ip 1.1.1.1
and the client is ip 2.2.2.2
then src
would be pointing to 1.1.1.1\file://C:/images/1.jpg
<--that's an example not a real protocol.
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