• Home
• fr.sii.sonar
• sonar-web-frontend-js
• 2.0.0
• source code
• W032.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.W032.html Maven / Gradle / Ivy

    
When do I get this error?
The "Unnecessary semicolon" error is thrown when JSHint or ESLint encounters a semicolon following a block statement or function declaration. In the following example we mistakenly include a semicolon after an if statement body (which is a block statement), and another after a function declaration:
​x
 
1
function example(a) {
2
    "use strict";
3
    if (a) {
4
        return true;
5
    };
6
};
7
​
JSHint 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 2.9.0
Line 5:
Unnecessary semicolon.
Line 6:
Unnecessary semicolon.

Why do I get this error?
This error is raised to highlight a pointless piece of code. Semicolons are
not required after block statements or function declarations. The specification
makes it clear where semicolons are necessary. For example, here's the grammar
for variable declarations (ES5 §12.2):

VariableStatement :

    var VariableDeclarationList ;

The semicolon is clearly required by this production. Now compare that to the
grammar for a block statement (ES5 §12.1):

Block :

    { StatementListopt }

This time there is no semicolon which means its safe to remove the extra
semicolons from the previous example. This will resolve the issue:
7
 
1
function example(a) {
2
    "use strict";
3
    if (a) {
4
        return true;
5
    }
6
}
7
​
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 W032.
This means you can tell JSHint to not issue this warning with the /*jshint
-W032 */ directive.
In ESLint the rule that generates this warning is named no-extra-semi. You can
disable it by setting it to 0, or enable it by setting it to 1.