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[guide] Added 'let' to rule defs regarding variables

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David Cameron
2017-03-03 14:44:34 -05:00
committed by Jordan Harband
parent 93e91d3eb9
commit c9490c698e
1 changed files with 2 additions and 2 deletions
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README.md
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@@ -1450,7 +1450,7 @@ Other Style Guides
## Variables
<a name="variables--const"></a><a name="13.1"></a>
- [13.1](#variables--const) Always use `const` to declare variables. Not doing so will result in global variables. We want to avoid polluting the global namespace. Captain Planet warned us of that. eslint: [`no-undef`](http://eslint.org/docs/rules/no-undef) [`prefer-const`](http://eslint.org/docs/rules/prefer-const)
- [13.1](#variables--const) Always use `const` or `let` to declare variables. Not doing so will result in global variables. We want to avoid polluting the global namespace. Captain Planet warned us of that. eslint: [`no-undef`](http://eslint.org/docs/rules/no-undef) [`prefer-const`](http://eslint.org/docs/rules/prefer-const)
```javascript
// bad
@@ -1461,7 +1461,7 @@ Other Style Guides
```
<a name="variables--one-const"></a><a name="13.2"></a>
- [13.2](#variables--one-const) Use one `const` declaration per variable. eslint: [`one-var`](http://eslint.org/docs/rules/one-var.html) jscs: [`disallowMultipleVarDecl`](http://jscs.info/rule/disallowMultipleVarDecl)
- [13.2](#variables--one-const) Use one `const` or `let` declaration per variable. eslint: [`one-var`](http://eslint.org/docs/rules/one-var.html) jscs: [`disallowMultipleVarDecl`](http://jscs.info/rule/disallowMultipleVarDecl)
> Why? It's easier to add new variable declarations this way, and you never have to worry about swapping out a `;` for a `,` or introducing punctuation-only diffs. You can also step through each declaration with the debugger, instead of jumping through all of them at once.