Baseline Widely available
Note: This feature is available in Web Workers.
The DOMException() constructor returns a DOMException object with a specified message and name.
new DOMException()
new DOMException(message)
new DOMException(message, name)
message Optional
A description of the exception. If not present, the empty string '' is used.
name Optional
A string. If the specified name is a standard error name, then getting the code property of the DOMException object will return the code number corresponding to the specified name. If not present, the string 'Error' is used.
A newly created DOMException object.
In this example, pressing the button causes a custom DOMException to be thrown, which is then caught and the custom error message shown in an alert.
<button>Trigger DOM Exception</button>
<p id="output"></p>
const button = document.querySelector("button");
button.onclick = () => {
try {
throw new DOMException("Custom DOM Exception Triggered.");
} catch (error) {
document.querySelector("#output").textContent = `Error: ${error.message}`;
}
};
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