The HTMLImageElement
interface's crossOrigin
attribute is a string which specifies the Cross-Origin Resource Sharing (CORS) setting to use when retrieving the image.
The HTMLImageElement
interface's crossOrigin
attribute is a string which specifies the Cross-Origin Resource Sharing (CORS) setting to use when retrieving the image.
A string of a keyword specifying the CORS mode to use when fetching the image resource. If you don't specify crossOrigin
, the image is fetched without CORS (the fetch no-cors
mode).
Permitted values are:
anonymous
Requests by the <img>
element have their mode
set to cors
and their credentials
mode set to same-origin
. This means that CORS is enabled and credentials are sent if the image is fetched from the same origin from which the document was loaded.
use-credentials
Requests by the HTMLImageElement
will use the cors
mode and the include
credentials mode; all image requests by the element will use CORS, regardless of what domain the fetch is from.
If crossOrigin
is an empty string (""
), the anonymous
mode is selected.
In this example, a new <img>
element is created and added to the document, loading the image with the Anonymous state; the image will be loaded using CORS and credentials will be used for all cross-origin loads.
The code below demonstrates setting the crossOrigin
property on an <img>
element to configure CORS access for the fetch of a newly-created image.
js
const imageUrl = "clock-demo-400px.png"; const container = document.querySelector(".container"); function loadImage(url) { const image = new Image(200, 200); image.addEventListener("load", () => container.prepend(image)); image.addEventListener("error", () => { const errMsg = document.createElement("output"); errMsg.value = `Error loading image at ${url}`; container.append(errMsg); }); image.crossOrigin = "anonymous"; image.alt = ""; image.src = url; } loadImage(imageUrl);
html
<div class="container"> <p> Here's a paragraph. It's a very interesting paragraph. You are captivated by this paragraph. Keep reading this paragraph. Okay, now you can stop reading this paragraph. Thanks for reading me. </p> </div>
css
body { font: 1.125rem/1.5, Helvetica, sans-serif; } .container { display: flow-root; width: 37.5em; border: 1px solid #d2d2d2; } img { float: left; padding-right: 1.5em; } output { background: rgba(100, 100, 100, 0.1); font-family: Courier, monospace; width: 95%; }
Specification |
---|
HTML Standard # dom-img-crossorigin |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
crossOrigin |
13 | 12 | 8 | 11 | ≤12.1 | 6 | 4.4 | 18 | 8 | ≤12.1 | 6 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/crossOrigin