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30secondsofcode
2018-05-02 17:21:29 +00:00
parent f7cf2263ef
commit 6dcfd36a3e
17 changed files with 76 additions and 40 deletions
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docs/utility.html
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@ -160,7 +160,7 @@ Logs: {
title<span class="token punctuation">:</span> <span class="token string">'Foo'</span><span class="token punctuation">,</span>
body<span class="token punctuation">:</span> <span class="token string">'bar bar bar'</span>
<span class="token punctuation">};</span>
<span class="token keyword">const</span> data <span class="token operator">=</span> JSON<span class="token punctuation">.</span><span class="token function">stringify</span><span class="token punctuation">(</span>newPost<span class="token punctuation">);</span>
<span class="token keyword">const</span> data <span class="token operator">=</span> <span class="token constant">JSON</span><span class="token punctuation">.</span><span class="token function">stringify</span><span class="token punctuation">(</span>newPost<span class="token punctuation">);</span>
<span class="token function">httpPost</span><span class="token punctuation">(</span>
<span class="token string">'https://jsonplaceholder.typicode.com/posts'</span><span class="token punctuation">,</span>
data<span class="token punctuation">,</span>
@ -219,11 +219,11 @@ Logs: {
}, {});</span>
</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">parseCookie</span><span class="token punctuation">(</span><span class="token string">'foo=bar; equation=E%3Dmc%5E2'</span><span class="token punctuation">);</span> <span class="token comment">// { foo: 'bar', equation: 'E=mc^2' }</span>
</pre><button class="primary clipboard-copy">&#128203;&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="prettybytes" class="section double-padded">prettyBytes</h3><div class="section double-padded"><p>Converts a number in bytes to a human-readable string.</p><p>Use an array dictionary of units to be accessed based on the exponent. Use <code>Number.toPrecision()</code> to truncate the number to a certain number of digits. Return the prettified string by building it up, taking into account the supplied options and whether it is negative or not. Omit the second argument, <code>precision</code>, to use a default precision of <code>3</code> digits. Omit the third argument, <code>addSpace</code>, to add space between the number and unit by default.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">prettyBytes</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num<span class="token punctuation">,</span> precision <span class="token operator">=</span> <span class="token number">3</span><span class="token punctuation">,</span> addSpace <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> UNITS <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'B'</span><span class="token punctuation">,</span> <span class="token string">'KB'</span><span class="token punctuation">,</span> <span class="token string">'MB'</span><span class="token punctuation">,</span> <span class="token string">'GB'</span><span class="token punctuation">,</span> <span class="token string">'TB'</span><span class="token punctuation">,</span> <span class="token string">'PB'</span><span class="token punctuation">,</span> <span class="token string">'EB'</span><span class="token punctuation">,</span> <span class="token string">'ZB'</span><span class="token punctuation">,</span> <span class="token string">'YB'</span><span class="token punctuation">];</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>num<span class="token punctuation">)</span> <span class="token operator">&lt;</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">return</span> num <span class="token operator">+</span> <span class="token punctuation">(</span>addSpace <span class="token operator">?</span> <span class="token string">' '</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> UNITS<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">];</span>
<span class="token keyword">const</span> exponent <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">min</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">log10</span><span class="token punctuation">(</span>num <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">? -</span>num <span class="token punctuation">:</span> num<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">3</span><span class="token punctuation">),</span> UNITS<span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">);</span>
<span class="token keyword">const</span> <span class="token constant">UNITS</span> <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'B'</span><span class="token punctuation">,</span> <span class="token string">'KB'</span><span class="token punctuation">,</span> <span class="token string">'MB'</span><span class="token punctuation">,</span> <span class="token string">'GB'</span><span class="token punctuation">,</span> <span class="token string">'TB'</span><span class="token punctuation">,</span> <span class="token string">'PB'</span><span class="token punctuation">,</span> <span class="token string">'EB'</span><span class="token punctuation">,</span> <span class="token string">'ZB'</span><span class="token punctuation">,</span> <span class="token string">'YB'</span><span class="token punctuation">];</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>num<span class="token punctuation">)</span> <span class="token operator">&lt;</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">return</span> num <span class="token operator">+</span> <span class="token punctuation">(</span>addSpace <span class="token operator">?</span> <span class="token string">' '</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token constant">UNITS</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">];</span>
<span class="token keyword">const</span> exponent <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">min</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">log10</span><span class="token punctuation">(</span>num <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">? -</span>num <span class="token punctuation">:</span> num<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">3</span><span class="token punctuation">),</span> <span class="token constant">UNITS</span><span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">);</span>
<span class="token keyword">const</span> n <span class="token operator">=</span> <span class="token function">Number</span><span class="token punctuation">(((</span>num <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">? -</span>num <span class="token punctuation">:</span> num<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">1000</span> <span class="token operator">**</span> exponent<span class="token punctuation">).</span><span class="token function">toPrecision</span><span class="token punctuation">(</span>precision<span class="token punctuation">));</span>
<span class="token keyword">return</span> <span class="token punctuation">(</span>num <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">?</span> <span class="token string">'-'</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> n <span class="token operator">+</span> <span class="token punctuation">(</span>addSpace <span class="token operator">?</span> <span class="token string">' '</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> UNITS<span class="token punctuation">[</span>exponent<span class="token punctuation">];
<span class="token keyword">return</span> <span class="token punctuation">(</span>num <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">?</span> <span class="token string">'-'</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> n <span class="token operator">+</span> <span class="token punctuation">(</span>addSpace <span class="token operator">?</span> <span class="token string">' '</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token constant">UNITS</span><span class="token punctuation">[</span>exponent<span class="token punctuation">];
};</span>
</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">prettyBytes</span><span class="token punctuation">(</span><span class="token number">1000</span><span class="token punctuation">);</span> <span class="token comment">// "1 KB"</span>
<span class="token function">prettyBytes</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">27145424323.5821</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// "-27.145 GB"</span>