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rules.jshint.W005.html Maven / Gradle / Ivy

    
When do I get this error?
The "A dot following a number can be confused with a decimal point" error is
thrown when JSHint encounters a numeric literal containing a decimal point as
the left-hand-side of a member expression. In the following example we attempt
to assign the string representation of a number to a variable:
​x
 
1
var a = 5.4.toString();
2
​
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 1:
A dot following a number can be confused with a decimal point.

Note that this is slightly different to closely related "A trailing decimal
point can be consued with a dot" error, although JSLint will use that
message in this situation too.
Why do I get this error?
This error is raised to highlight a potentially confusing piece of code.
Your script will run without error if you do not change it, but it could be
confusing to other developers, especially at first glance.
Since a number can only contain a single decimal point the parser is able to
determine that any subsequent occurences of the character after a numeric
literal can only be intended as a member operator. In other words the ambiguity
of the . character is removed. However the construct can appear confusing at
first glance.
The best solution in this case is to wrap the number in parentheses:
2
 
1
var a = (5.4).toString();
2
​
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 W005. This means you can tell JSHint to not issue this warning
with the /*jshint -W005 */ directive.