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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

Error constructor creates an error object.

句法

new Error([message[, fileName[, lineNumber]]])
					

参数

message 可选

A human-readable description of the error.

fileName 可选

The value for the fileName property on the created Error object. Defaults to the name of the file containing the code that called the Error() 构造函数。

lineNumber 可选

The value for the lineNumber property on the created Error object. Defaults to the line number containing the Error() constructor invocation.

范例

Function call or new construction

When Error is used like a function -- without new , it will return an Error object. Therefore, a mere call to Error will produce the same output that constructing an Error object via the new keyword would.

// this...
const x = Error('I was created using a function call!')
​​​​// ...has the same functionality as this.
const y = new Error('I was constructed via the "new" keyword!')
					

规范

规范
ECMAScript (ECMA-262) The definition of 'Error constructor' in that specification.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
Error() 构造函数	Chrome 1	Edge 12	Firefox 1	IE 6	Opera 4	Safari 1	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 1	Samsung Internet Android 1.0	nodejs 0.1.100

图例

完整支持

完整支持

另请参阅

• throw
• try...catch

元数据

• 最后修改： Aug 22, 2020

相关话题

1. 标准内置对象
2. Error
3. 特性
   1. Error.prototype.columnNumber
   2. Error.prototype.fileName
   3. Error.prototype.lineNumber
   4. Error.prototype.message
   5. Error.prototype.name
   6. Error.prototype.stack
4. 方法
   1. Error.prototype.toSource()
   2. Error.prototype.toString()
5. 相关页面：
6. EvalError
7. InternalError
8. RangeError
9. ReferenceError
10. SyntaxError
11. TypeError
12. URIError
13. 继承：
14. Function
15. 特性
    1. Function.arguments
    2. Function.caller
    3. Function.displayName
    4. Function.length
    5. Function.name
16. 方法
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toSource()
    5. Function.prototype.toString()
17. Object
18. 特性
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
19. 方法
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toSource()
    10. Object.prototype.toString()
    11. Object.prototype.valueOf()
    12. Object.setPrototypeOf()