• Home
• fr.sii.sonar
• sonar-web-frontend-js
• 2.0.0
• source code
• W069.html

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

rules.jshint.W069.html Maven / Gradle / Ivy

    
When do I get this error?
The "['{a}'] is better written in dot notation" error is thrown when JSLint,
JSHint or ESLint encounters an attempt to access a property using a string
literal within a pair of square brackets when the property name is not a
reserved word. In the following example we attempt to access the prop
property of the x object:
​x
 
1
var x = {
2
        prop: 10
3
    },
4
    y = x["prop"];
5
​
JSLint 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 2015-09-23
Line 3:
['prop'] is better written in dot notation.

Why do I get this error?
This error is raised to highlight a unnecessarily verbose and potentially
confusing piece of code. It is very common in many programming languages to
use dot notation when referring to properties of an object. There is no problem
with either syntax, and both will work in all environments. However, by using
dot notation where possible, you can save three characters every time. Here's
the above snippet, this time with dot notation:
5
 
1
var x = {
2
        prop: 10
3
    },
4
    y = x.prop;
5
​
JSLint 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 2015-09-23

However, it's important to remember that you have to use the square bracket
notation if you want to access a property whose identifier is a reserved word.
JSLint and JSHint will not raise this error in that situation. In the following
example, x has a property with the identifier class. Notice that JSLint does
not throw an error, even though we are using square bracket notation:
5
 
1
var x = {
2
        "class": 10
3
    },
4
    y = x["class"];
5
​
JSLint found 2 errors
Which linter should be used for this code snippet:
 JSLint JSHint ESLint
Which version of the linter should be used:
Update
Version 2015-09-23
Line 1:
Quotes are not needed around 'class'.
Line 3:
['class'] is better written in dot notation.

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 W069.
This means you can tell JSHint to not issue this warning with the /*jshint
-W069 */ directive. You can also set the sub option to true.
In ESLint the rule that generates this warning is named dot-notation. You can
disable it by setting it to 0, or enable it by setting it to 1.