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Merge branch 'master' of https://github.com/Chalarangelo/30-seconds-of-code

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29
README.md
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@ -1,7 +1,7 @@
![Logo](/logo.png)
# 30 seconds of code [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/30-seconds-of-code/Lobby) [![Travis Build](https://travis-ci.org/Chalarangelo/30-seconds-of-code.svg?branch=master)](https://travis-ci.org/Chalarangelo/30-seconds-of-code)
> Curated collection of useful Javascript snippets that you can understand in 30 seconds or less.
> Curated collection of useful JavaScript snippets that you can understand in 30 seconds or less.
- Use <kbd>Ctrl</kbd> + <kbd>F</kbd> or <kbd>command</kbd> + <kbd>F</kbd> to search for a snippet.
- Contributions welcome, please read the [contribution guide](CONTRIBUTING.md).
@ -154,7 +154,6 @@
* [`toDecimalMark`](#todecimalmark)
* [`toOrdinalSuffix`](#toordinalsuffix)
* [`UUIDGenerator`](#uuidgenerator)
* [`validateEmail`](#validateemail)
* [`validateNumber`](#validatenumber)
## Array
@ -243,7 +242,7 @@ Removes falsey values from an array.
Use `Array.filter()` to filter out falsey values (`false`, `null`, `0`, `""`, `undefined`, and `NaN`).
```js
const compact = (arr) => arr.filter(Boolean);
const compact = arr => arr.filter(Boolean);
// compact([0, 1, false, 2, '', 3, 'a', 'e'*23, NaN, 's', 34]) -> [ 1, 2, 3, 'a', 's', 34 ]
```
@ -355,8 +354,8 @@ Returns every nth element in an array.
Use `Array.filter()` to create a new array that contains every nth element of a given array.
```js
const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === 0);
// everyNth([1,2,3,4,5,6], 2) -> [ 1, 3, 5 ]
const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
// everyNth([1,2,3,4,5,6], 2) -> [ 2, 4, 6 ]
```
[⬆ back to top](#table-of-contents)
@ -1385,12 +1384,11 @@ Returns `false` if the provided number has positive divisors other than 1 and it
```js
const isPrime = num => {
for (var i = 2; i < num; i++) if (num % i == 0) return false;
for (var i = 2; i * i <= num; i++) if (num % i == 0) return false;
return num >= 2;
}
};
// isPrime(11) -> true
// isPrime(12) -> false
// isPrime(1) -> false
```
[⬆ back to top](#table-of-contents)
@ -2167,21 +2165,6 @@ const UUIDGenerator = () =>
[⬆ back to top](#table-of-contents)
### validateEmail
Returns `true` if the given string is a valid email, `false` otherwise.
Use a regular expression to check if the email is valid.
Returns `true` if email is valid, `false` if not.
```js
const validateEmail = str =>
/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(str);
// validateEmail(mymail@gmail.com) -> true
```
[⬆ back to top](#table-of-contents)
### validateNumber
Returns `true` if the given value is a number, `false` otherwise.

20
docs/index.html
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@ -185,7 +185,6 @@
<a class="sublink-1" href="#todecimalmark">toDecimalMark</a>
<a class="sublink-1" href="#toordinalsuffix">toOrdinalSuffix</a>
<a class="sublink-1" href="#uuidgenerator">UUIDGenerator</a>
<a class="sublink-1" href="#validateemail">validateEmail</a>
<a class="sublink-1" href="#validatenumber">validateNumber</a>
</nav><main class="col-sm-12 col-md-8 col-lg-9" style="height:100%;overflow-y:auto;background:#eceef2;padding:0"><a id="top">&nbsp;</a><h2 style="text-align:center">Array</h2>
@ -234,7 +233,7 @@ If the original array can't be split evenly, the final chunk will contain the re
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="compact">compact</h3></div><div class="section double-padded">
<p>Removes falsey values from an array.</p>
<p>Use <code>Array.filter()</code> to filter out falsey values (<code>false</code>, <code>null</code>, <code>0</code>, <code>&quot;&quot;</code>, <code>undefined</code>, and <code>NaN</code>).</p>
<pre><code class="language-js">const compact = (arr) =&gt; arr.filter(Boolean);
<pre><code class="language-js">const compact = arr =&gt; arr.filter(Boolean);
// compact([0, 1, false, 2, '', 3, 'a', 'e'*23, NaN, 's', 34]) -&gt; [ 1, 2, 3, 'a', 's', 34 ]
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="countoccurrences">countOccurrences</h3></div><div class="section double-padded">
@ -290,8 +289,8 @@ Returns the remaining elements.</p>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="everynth">everyNth</h3></div><div class="section double-padded">
<p>Returns every nth element in an array.</p>
<p>Use <code>Array.filter()</code> to create a new array that contains every nth element of a given array.</p>
<pre><code class="language-js">const everyNth = (arr, nth) =&gt; arr.filter((e, i) =&gt; i % nth === 0);
// everyNth([1,2,3,4,5,6], 2) -&gt; [ 1, 3, 5 ]
<pre><code class="language-js">const everyNth = (arr, nth) =&gt; arr.filter((e, i) =&gt; i % nth === nth - 1);
// everyNth([1,2,3,4,5,6], 2) -&gt; [ 2, 4, 6 ]
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="filternonunique">filterNonUnique</h3></div><div class="section double-padded">
<p>Filters out the non-unique values in an array.</p>
@ -869,12 +868,11 @@ Returns <code>true</code> if the number is even, <code>false</code> if the numbe
<p>Checks if the provided integer is a prime number.</p>
<p>Returns <code>false</code> if the provided number has positive divisors other than 1 and itself or if the number itself is less than 2.</p>
<pre><code class="language-js">const isPrime = num =&gt; {
for (var i = 2; i &lt; num; i++) if (num % i == 0) return false;
for (var i = 2; i * i &lt;= num; i++) if (num % i == 0) return false;
return num &gt;= 2;
}
};
// isPrime(11) -&gt; true
// isPrime(12) -&gt; false
// isPrime(1) -&gt; false
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="lcm">lcm</h3></div><div class="section double-padded">
<p>Returns the least common multiple of two numbers.</p>
@ -1318,14 +1316,6 @@ If digit is found in teens pattern, use teens ordinal.</p>
);
// UUIDGenerator() -&gt; '7982fcfe-5721-4632-bede-6000885be57d'
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="validateemail">validateEmail</h3></div><div class="section double-padded">
<p>Returns <code>true</code> if the given string is a valid email, <code>false</code> otherwise.</p>
<p>Use a regular expression to check if the email is valid.
Returns <code>true</code> if email is valid, <code>false</code> if not.</p>
<pre><code class="language-js">const validateEmail = str =&gt;
/^(([^&lt;&gt;()\[\]\\.,;:\s@&quot;]+(\.[^&lt;&gt;()\[\]\\.,;:\s@&quot;]+)*)|(&quot;.+&quot;))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(str);
// validateEmail(mymail@gmail.com) -&gt; true
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="validatenumber">validateNumber</h3></div><div class="section double-padded">
<p>Returns <code>true</code> if the given value is a number, <code>false</code> otherwise.</p>
<p>Use <code>!isNaN</code> in combination with <code>parseFloat()</code> to check if the argument is a number.

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snippets/compact.md
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@ -5,6 +5,6 @@ Removes falsey values from an array.
Use `Array.filter()` to filter out falsey values (`false`, `null`, `0`, `""`, `undefined`, and `NaN`).
```js
const compact = (arr) => arr.filter(Boolean);
const compact = arr => arr.filter(Boolean);
// compact([0, 1, false, 2, '', 3, 'a', 'e'*23, NaN, 's', 34]) -> [ 1, 2, 3, 'a', 's', 34 ]
```

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snippets/everyNth.md
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@ -5,6 +5,6 @@ Returns every nth element in an array.
Use `Array.filter()` to create a new array that contains every nth element of a given array.
```js
const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === 0);
// everyNth([1,2,3,4,5,6], 2) -> [ 1, 3, 5 ]
const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
// everyNth([1,2,3,4,5,6], 2) -> [ 2, 4, 6 ]
```

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snippets/isPrime.md
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@ -6,10 +6,9 @@ Returns `false` if the provided number has positive divisors other than 1 and it
```js
const isPrime = num => {
for (var i = 2; i < num; i++) if (num % i == 0) return false;
for (var i = 2; i * i <= num; i++) if (num % i == 0) return false;
return num >= 2;
}
};
// isPrime(11) -> true
// isPrime(12) -> false
// isPrime(1) -> false
```

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snippets/validateEmail.md
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@ -1,12 +0,0 @@
### validateEmail
Returns `true` if the given string is a valid email, `false` otherwise.
Use a regular expression to check if the email is valid.
Returns `true` if email is valid, `false` if not.
```js
const validateEmail = str =>
/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(str);
// validateEmail(mymail@gmail.com) -> true
```

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static-parts/README-start.md
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@ -3,6 +3,7 @@
# 30 seconds of code [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/30-seconds-of-code/Lobby) [![Travis Build](https://travis-ci.org/Chalarangelo/30-seconds-of-code.svg?branch=master)](https://travis-ci.org/Chalarangelo/30-seconds-of-code) <a data-role="dummy" href="https://insight.io/github.com/Chalarangelo/30-seconds-of-code?source=0" title="View this repo on Insight.io" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" width="104" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"></stop><stop offset="1" stop-opacity=".1"></stop></linearGradient><clipPath id="a"><rect width="104" height="20" rx="3" fill="#fff"></rect></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h61v20H0z"></path><path fill="#4c1" d="M61 0h43v20H61z"></path><path fill="url(#b)" d="M0 0h104v20H0z"></path></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11"><text x="30.5" y="15" fill="#010101" fill-opacity=".3">insight.io</text><text x="30.5" y="14">insight.io</text><text x="81.5" y="15" fill="#010101" fill-opacity=".3">Ready</text><text x="81.5" y="14">Ready</text></g></svg></a>
> Curated collection of useful Javascript snippets that you can understand in 30 seconds or less.
- Use <kbd>Ctrl</kbd> + <kbd>F</kbd> or <kbd>command</kbd> + <kbd>F</kbd> to search for a snippet.
- Contributions welcome, please read the [contribution guide](CONTRIBUTING.md).
- Snippets are written in ES6, use the [Babel transpiler](https://babeljs.io/) to ensure backwards-compatibility.

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tag_database
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@ -119,7 +119,6 @@ truncateString:string
truthCheckCollection:object
union:array
UUIDGenerator:utility
validateEmail:utility
validateNumber:utility
without:array
words:string