Error.prototype.name

Error.prototype 的 name 数据属性由所有 Error 实例共享。它代表错误类型的名称。对于 Error.prototype.name，初始值为 "Error"。像 TypeError 和 SyntaxError 这样的子类提供它们自己的 name 属性。

¥The name data property of Error.prototype is shared by all Error instances. It represents the name for the type of error. For Error.prototype.name, the initial value is "Error". Subclasses like TypeError and SyntaxError provide their own name properties.

值

¥Value

一根绳子。对于 Error.prototype.name，初始值为 "Error"。

¥A string. For Error.prototype.name, the initial value is "Error".

Property attributes of Error.prototype.name
Writable yes
Enumerable no
Configurable yes

描述

¥Description

默认情况下，Error 实例的名称为 "错误"。除了 message 属性之外，Error.prototype.toString() 方法还使用 name 属性来创建错误的字符串表示形式。

¥By default, Error instances are given the name "Error". The name property, in addition to the message property, is used by the Error.prototype.toString() method to create a string representation of the error.

示例

¥Examples

抛出自定义错误

¥Throwing a custom error

js
const e = new Error("Malformed input"); // e.name is 'Error'

e.name = "ParseError";
throw e;
// e.toString() would return 'ParseError: Malformed input'

规范

Specification
ECMAScript Language Specification
# sec-error.prototype.name

¥Specifications

浏览器兼容性

BCD tables only load in the browser

¥Browser compatibility

也可以看看

¥See also