非常教程

JavaScript参考手册

错误 | Errors

Errors: Deprecated source map pragma

信息

Warning: SyntaxError: Using //@ to indicate sourceURL pragmas is deprecated. Use //# instead

Warning: SyntaxError: Using //@ to indicate sourceMappingURL pragmas is deprecated. Use //# instead

错误类型

SyntaxError发生了一个警告。JavaScript执行不会停止。

什么地方出了错?

JavaScript源代码中存在不赞成使用的源地图语法。

JavaScript资源经常被组合和缩小,以使服务器从服务器传送更高效。使用源映射,调试器可以将正在执行的代码映射到原始源文件。

//@cc_on在IE JScript引擎中解释为启用条件编译之后,源映射规范在页面中找到时,由于与IE发生冲突而更改语法。在IE中的条件编译评论是一个鲜为人知的功能,但它打破了与jQuery和其他图书馆的源地图。

例子

弃用的语法

带“@”符号的语法已弃用。

//@ sourceMappingURL=http://example.com/path/to/your/sourcemap.map

标准语法

改为使用“#”号。

//# sourceMappingURL=http://example.com/path/to/your/sourcemap.map

或者,您也可以SourceMap为您的JavaScript文件设置一个标题,以避免发表评论:

SourceMap: /path/to/file.js.map

浏览器兼容性

Feature

Chrome

Firefox (Gecko)

Internet Explorer

Opera

Safari

New syntax

(Yes)

24 (24)

?

(Yes)

(Yes)

Feature

Android

Chrome for Android

Firefox Mobile (Gecko)

IE Mobile

Opera Mobile

Safari Mobile

New syntax

?

?

24.0 (24)

?

?

?

错误 | Errors相关

1.Error
2.error.message
3.error.name
4.Error.prototype
5.error.toString
6.Errors
7.Errors: Already has pragma
8.Errors: Array sort argument
9.Errors: Bad octal
10.Errors: Bad radix
11.Errors: Bad regexp flag
12.Errors: Bad return or yield
13.Errors: Called on incompatible type
14.Errors: Cant access lexical declaration before init
15.Errors: Cant define property object not extensible
16.Errors: Cant delete
17.Errors: Cant redefine property
18.Errors: Cyclic object value
19.Errors: Dead object
20.Errors: Delete in strict mode
21.Errors: Deprecated caller or arguments usage
22.Errors: Deprecated expression closures
23.Errors: Deprecated octal
24.Errors: Deprecated String generics
25.Errors: Deprecated toLocaleFormat
26.Errors: Equal as assign
27.Errors: For-each-in loops are deprecated
28.Errors: Getter only
29.Errors: Identifier after number
30.Errors: Illegal character
31.Errors: in operator no object
32.Errors: Invalid array length
33.Errors: Invalid assignment left-hand side
34.Errors: Invalid const assignment
35.Errors: Invalid date
36.Errors: Invalid for-in initializer
37.Errors: Invalid for-of initializer
38.Errors: JSON bad parse
39.Errors: Malformed formal parameter
40.Errors: Malformed URI
41.Errors: Missing bracket after list
42.Errors: Missing colon after property id
43.Errors: Missing curly after function body
44.Errors: Missing curly after property list
45.Errors: Missing formal parameter
46.Errors: Missing initializer in const
47.Errors: Missing name after dot operator
48.Errors: Missing parenthesis after argument list
49.Errors: Missing parenthesis after condition
50.Errors: Missing semicolon before statement
51.Errors: More arguments needed
52.Errors: Negative repetition count
53.Errors: No non-null object
54.Errors: No properties
55.Errors: No variable name
56.Errors: Non configurable array element
57.Errors: Not a codepoint
58.Errors: Not a constructor
59.Errors: Not a function
60.Errors: Not defined
61.Errors: Precision range
62.Errors: Property access denied
63.Errors: Read-only
64.Errors: Redeclared parameter
65.Errors: Reserved identifier
66.Errors: Resulting string too large
67.Errors: Stmt after return
68.Errors: Strict Non Simple Params
69.Errors: Too much recursion
70.Errors: Typed array invalid arguments
71.Errors: Undeclared var
72.Errors: Undefined prop
73.Errors: Unexpected token
74.Errors: Unexpected type
75.Errors: Unnamed function statement
76.Errors: Unterminated string literal
77.Errors: Var hides argument
78.EvalError
79.EvalError.prototype
80.RangeError
81.RangeError.prototype
82.ReferenceError
83.ReferenceError.prototype
84.SyntaxError
85.SyntaxError.prototype
86.TypeError
87.TypeError.prototype
88.URIError
89.URIError.prototype
JavaScript

JavaScript 是一种高级编程语言,通过解释执行,是一门动态类型,面向对象(基于原型)的解释型语言。它已经由ECMA(欧洲电脑制造商协会)通过 ECMAScript 实现语言的标准化。它被世界上的绝大多数网站所使用,也被世界主流浏览器( Chrome、IE、FireFox、Safari、Opera )支持。JavaScript 是一门基于原型、函数先行的语言,是一门多范式的语言,它支持面向对象编程,命令式编程,以及函数式编程。它提供语法来操控文本、数组、日期以及正则表达式等,不支持 I/O,比如网络