Let’s assume our web application relies on an external system to provide the image link, for example: employee photo link of a company.
If the image link is invalid, we will get the ugly looking “x” on certain browsers.
To fix this, we can load an image placeholder from our own web application if the external image link fails to load for some reason:-
<img src="http://external/server/employeeId.jpg" onerror="this.src='http://server/app/resources/img/avatar.jpg'">
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