I need to show a picture on web page without uploading it. something like
<img id="RuPic" src="file://localhost/D:/folder/image.jpg"/>
How to do that?
To use an image on a webpage, use the <img> tag. The tag allows you to add image source, alt, width, height, etc. The src is to add the image URL. The alt is the alternate text attribute, which is text that is visible when the image fails to load.
In order to put a simple image on a webpage, we use the <img> element. This is an empty element (meaning that it has no text content or closing tag) that requires a minimum of one attribute to be useful — src (sometimes spoken as its full title, source).
You can do that easily using FileReader.readAsDataURL()
. The user chooses an image and you can display it without needing to upload it.
For more info see https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsDataURL
Here is the code:
function previewFile() {
// Where you will display your image
var preview = document.querySelector('img');
// The button where the user chooses the local image to display
var file = document.querySelector('input[type=file]').files[0];
// FileReader instance
var reader = new FileReader();
// When the image is loaded we will set it as source of
// our img tag
reader.onloadend = function () {
preview.src = reader.result;
}
if (file) {
// Load image as a base64 encoded URI
reader.readAsDataURL(file);
} else {
preview.src = "";
}
}
<input type="file" onchange="previewFile()"><br>
<img src="" height="200" alt="Image preview...">
Linking to local image files from remote HTML files used to be possible, but no longer is.
In Firefox since version 1.5 (background and config options here)
In Internet Explorer I think since Version 8 (I believe I have successfully done this in IE 7, but I can't find hard data)
In Chrome probably since forever
See for example this vulnerability report for why this is a good thing.
I don't think there is a workaround. You will just have to upload the image first.
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