javascript 当图像加载失败时，摆脱“加载资源失败：服务器响应状态为 403（禁止）”消息？
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Getting rid of the "Failed to load resource: the server responded with a status of 403 (Forbidden)" message when an image fails to load?
提问by Lance Pollard
If an image doesn't exist, or somehow an image just doesn't load, is there a way to make it so this message doesn't show up in the web inspector?
如果图像不存在，或者图像以某种方式无法加载，是否有办法使其不显示在网络检查器中？
Failed to load resource: the server responded with a status of 403 (Forbidden)
加载资源失败：服务器响应状态为 403（禁止）
I have tried these:
我试过这些：
<img src="/path.png" onerror="this.src = '/missing.png'; this.onerror = ''; return true;"/>
<img src="/path.png" onerror="this.src = '/missing.png'; this.onerror = ''; return false;"/>
And I've tried it in jQuery:
我已经在 jQuery 中尝试过：
$(document).ready(function() {
$("img").error(function(event) {
$(this).attr("src", "/missing.png");
return false;
}
});
That message gets output in red before any of these event handlers get access to it, is there not a way to prevent this message from showing up?
在这些事件处理程序中的任何一个访问它之前，该消息以红色输出，有没有办法阻止此消息显示？
Ideally, I would be able to do this:
理想情况下，我将能够做到这一点：
$("img").live("error", function() { $(this).attr("src", "/missing.png"); });
so I don't have to:
所以我不必：
- Write inline javascript like
<img onerror='x'/> - and it would work on dynamically loaded images.
- 像这样编写内联 javascript
<img onerror='x'/> - 它适用于动态加载的图像。
采纳答案by Rodaine
Unfortunately you would need to check for the existence of the image prior to adding the <img>to the DOM. This check would have to occur server-side as far as I know; even attempting to do this with JQuery/AJAX will still result in a 404 or 403 error appearing in the console.
不幸的是，您需要在将图像添加<img>到 DOM之前检查图像是否存在。据我所知，这项检查必须在服务器端进行；即使尝试使用 JQuery/AJAX 执行此操作仍会导致控制台中出现 404 或 403 错误。
