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rules.jshint.W108.html Maven / Gradle / Ivy

    
When do I get this error?
The "Strings must use singlequote" and "Strings must use doublequote" errors are
thrown when JSHint or ESLint encounters string literal delimited by double
quote characters when the quotmark option is set to single or a string
literal delimited by single quote characters when the quotmark option is set
to double.  In the following example we attempt to assign a string literal
to the variable x:
​x
 
1
/*jshint quotmark: double */
2
var x = 'My String';
3
​
JSHint found 1 error
Which linter should be used for this code snippet:
 JSLint JSHint ESLint
Which version of the linter should be used:
Update
Version 2.9.0
Line 2:
Strings must use doublequote.

Why do I get this error?
This error is raised to highlight a deviation from a specific coding style.
Your code will run fine if you do not fix this error, but it demonstrates a lack
of care. There is no difference in JavaScript between single and double quotes.
This is made clear by the grammar for string literals (ES5
§7.8.4):

StringLiteral ::

    " DoubleStringCharactersopt "

    ' SingleStringCharactersopt '

The only difference is that DoubleStringCharacters cannot contain another
double quote, and SingleStringCharacters cannot contain a single quote (as
that would terminate the string literal). If this option is set to either
double or single then it is likely your codebase requires you to conform to
a specific style in which one type of quote is preferred. To fix the error,
simply use the correct type of quote:
3
 
1
/*jshint quotmark: double */
2
var x = "My String";
3
​
JSHint found no errors
Which linter should be used for this code snippet:
 JSLint JSHint ESLint
Which version of the linter should be used:
Update
Version 2.9.0

In JSHint 1.0.0 and above you have the ability to ignore any warning with a
special option syntax. The identifier of this warning is W108
(for double quotes) or W109 (for single quotes). This means you can tell
JSHint to not issue this warning with the /*jshint -W108 */ or /*jshint -W109
*/ directive.