JavaScript Error Reference
Error Object
The Error object provides error information when an error occurs.
Example
In this example we have written "alert" as "adddlert" to deliberately produce an error.
Return the error name and a description of the error:
try {
adddlert("Welcome");
}
catch(err) {
document.getElementById("demo").innerHTML =
err.name + "<br>" + err.message;
}
Try it Yourself »
For a tutorial about JavaScript Errors, read our JavaScript Error Tutorial.
Error Object Properties
| Property | Description |
|---|---|
| name | Sets or returns an error name |
| message | Sets or returns an error message (a string) |
Non-Standard Error Object Properties
Mozilla and Microsoft defines some non-standard error object properties:
fileName (Mozilla)
lineNumber (Mozilla)
columnNumber (Mozilla)
stack (Mozilla)
description (Microsoft)
number (Microsoft)
Do not use these properties in public web sites. They will not work in all browsers.
