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HTML onerror Event Attribute
The HTML onerror event attribute is triggered when an error occurs while loading an external file in an HTML document.
Syntax
Following is the syntax −
<tagname onerror=”script”>Content</tagname>
Let us see an example of HTML onerror event Attribute −
Example
<!DOCTYPE html> <html> <head> <style> body { color: #000; height: 100vh; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat; text-align: center; padding: 20px; } .btn { background: #db133a; border: none; height: 2rem; border-radius: 2px; width: 40%; display: block; color: #fff; outline: none; cursor: pointer; margin: 1rem auto; } </style> </head> <body> <h1>HTML onerror Event Attribute Demo</h1> <button onclick="add()" class="btn">Add Nature Image</button> <script> function add() { var imgEle = document.createElement('IMG'); imgEle.setAttribute("src", "nature.png"); imgEle.setAttribute("alt", "nature image"); imgEle.setAttribute("onerror", "errorFn()"); document.body.appendChild(imgEle); } function errorFn() { document.body.style.background = "linear-gradient(45deg, #8BC6EC 0%, #9599E2 100%) no-repeat"; document.body.style.color = "#fff"; } </script> </body> </html>
Output
Click on “Add Nature Image” button to create an image element with wrong source attribute and with onerror event attribute and then it to body element.
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