JSLintが「＆」および「|」の予期しない使用を報告する-これを掃除したい
私のJavascriptコードを100％JSLintクリーンにしようとしています。
UUIDを作成するために他の場所から持ち上げたJSコードをいくつか持っています。このコードには次の行があります。
s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1);
この行は、JSLintを刺激して2つのエラーメッセージを生成します。
1) Unexpected use of '&'
2) Unexpected use of '|'
理由はわかりません-エラーメッセージを解消するために再コーディングする方法については、弁護士に感謝します。
「なぜ」という理由は、JSでは実際のビット単位の演算は非常にまれであり、JSコードに表示されるこれらの演算子はほとんどの場合、ブールバージョン（&&、||）。それがJSLintが気にする理由です。これは、ビット単位の演算の合法的な使用です。 bitwiseフラグで警告を止めることができると思います：
/*jslint bitwise: true */
bitwiseオプションを指定しましたか？このオプションは、Javascriptでは効率が悪い傾向があるため、ビットごとの演算のすべての使用について警告します（ネイティブの浮動小数点数は、ビットごとの演算のためにintに変換してから変換する必要があります）。
this javascript lint ツールを使用している場合は、コマンドラインで構成ファイルを指定して、有効/無効にするチェックを指定できます。
たとえば、私は通常、次のように私を呼び出します。
jsl -conf jsl.conf
次のようなjsl.confファイル
#----------------------------------------------------------------------------
#
# This is a slightly edited version of the jsl.default.conf file that comes
# with the install package for JavaScript Lint.
#
#----------------------------------------------------------------------------
#
# Configuration File for JavaScript Lint 0.3.0
# Developed by Matthias Miller (http://www.JavaScriptLint.com)
#
# This configuration file can be used to lint a collection of scripts, or to
# enable or disable warnings for scripts that are linted via the command line.
#
### Warnings
# Enable or disable warnings based on requirements.
# Use "+WarningName" to display or "-WarningName" to suppress.
#
-no_return_value # function {0} does not always return a value
+duplicate_formal # duplicate formal argument {0}
-equal_as_assign # test for equality (==) mistyped as assignment (=)?{0}
+var_hides_arg # variable {0} hides argument
-redeclared_var # redeclaration of {0} {1}
-anon_no_return_value # anonymous function does not always return a value
+missing_semicolon # missing semicolon
+meaningless_block # meaningless block; curly braces have no impact
+comma_separated_stmts # multiple statements separated by commas (use semicolons?)
+unreachable_code # unreachable code
-missing_break # missing break statement
-missing_break_for_last_case # missing break statement for last case in switch
-comparison_type_conv # comparisons against null, 0, true, false, or an empty string allowing implicit type conversion (use === or !==)
-inc_dec_within_stmt # increment (++) and decrement (--) operators used as part of greater statement
+useless_void # use of the void type may be unnecessary (void is always undefined)
+multiple_plus_minus # unknown order of operations for successive plus (e.g. x+++y) or minus (e.g. x---y) signs
+use_of_label # use of label
-block_without_braces # block statement without curly braces
-leading_decimal_point # leading decimal point may indicate a number or an object member
+trailing_decimal_point # trailing decimal point may indicate a number or an object member
-octal_number # leading zeros make an octal number
+nested_comment # nested comment
-misplaced_regex # regular expressions should be preceded by a left parenthesis, assignment, colon, or comma
-ambiguous_newline # unexpected end of line; it is ambiguous whether these lines are part of the same statement
-empty_statement # empty statement or extra semicolon
-missing_option_explicit # the "option explicit" control comment is missing
+partial_option_explicit # the "option explicit" control comment, if used, must be in the first script tag
+dup_option_explicit # duplicate "option explicit" control comment
+useless_assign # useless assignment
-ambiguous_nested_stmt # block statements containing block statements should use curly braces to resolve ambiguity
+ambiguous_else_stmt # the else statement could be matched with one of multiple if statements (use curly braces to indicate intent)
-missing_default_case # missing default case in switch statement
+duplicate_case_in_switch # duplicate case in switch statements
+default_not_at_end # the default case is not at the end of the switch statement
+legacy_cc_not_understood # couldn't understand control comment using /*@keyword@*/ syntax
+jsl_cc_not_understood # couldn't understand control comment using /*jsl:keyword*/ syntax
+useless_comparison # useless comparison; comparing identical expressions
+with_statement # with statement hides undeclared variables; use temporary variable instead
+trailing_comma_in_array # extra comma is not recommended in array initializers
+assign_to_function_call # assignment to a function call
-parseint_missing_radix # parseInt missing radix parameter
### Output format
# Customize the format of the error message.
# __FILE__ indicates current file path
# __FILENAME__ indicates current file name
# __LINE__ indicates current line
# __ERROR__ indicates error message
#
# Visual Studio syntax (default):
+output-format __FILE__(__LINE__): __ERROR__
# Alternative syntax:
#+output-format __FILE__:__LINE__: __ERROR__
### Context
# Show the in-line position of the error.
# Use "+context" to display or "-context" to suppress.
#
+context
### Semicolons
# By default, assignments of an anonymous function to a variable or
# property (such as a function prototype) must be followed by a semicolon.
#
+lambda_assign_requires_semicolon
### Control Comments
# Both JavaScript Lint and the JScript interpreter confuse each other with the syntax for
# the /*@keyword@*/ control comments and JScript conditional comments. (The latter is
# enabled in JScript with @cc_on@). The /*jsl:keyword*/ syntax is preferred for this reason,
# although legacy control comments are enabled by default for backward compatibility.
#
#+legacy_control_comments
### JScript Function Extensions
# JScript allows member functions to be defined like this:
# function MyObj() { /*constructor*/ }
# function MyObj.prototype.go() { /*member function*/ }
#
# It also allows events to be attached like this:
# function window::onload() { /*init page*/ }
#
# This is a Microsoft-only JavaScript extension. Enable this setting to allow them.
#
-jscript_function_extensions
### Defining identifiers
# By default, "option explicit" is enabled on a per-file basis.
# To enable this for all files, use "+always_use_option_explicit"
-always_use_option_explicit
# Define certain identifiers of which the lint is not aware.
# (Use this in conjunction with the "undeclared identifier" warning.)
#
# Common uses for webpages might be:
#+define window
#+define document
### Interactive
# Prompt for a keystroke before exiting.
#+pauseatend
### Files
# Specify which files to lint
# Use "+recurse" to enable recursion (disabled by default).
# To add a set of files, use "+process FileName", "+process Folder\Path\*.js",
# or "+process Folder\Path\*.htm".
#
追伸チェックアウト my javascript UUID page ちなみに、上記のJSLintチェックのすべてに合格しています。 :-)