JSLint reports unexpected use of '&' and '|' — I'd like to clean this

Question

I\'m trying to get my Javascript code 100% JSLint clean.

I\'ve got some JS code that I\'ve lifted from elsewhere to create a UUID. That code has the following line:

Answer 1

If you're using this javascript lint tool you can specify a configuration file on the command line that specifies which checks to enable/disable.

For example, I typically invoke mine as follows:

jsl -conf jsl.conf

with a jsl.conf file that looks like this

#----------------------------------------------------------------------------
#
# 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".
#

P.S. Check out my javascript UUID page which, by the way, passes all of the above JSLint checks. :-)