mithril-vndb/archive/v1.0.0-rc.8/parseQueryString.html
2017-01-26 20:46:32 -05:00

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<h1>Mithril <small>1.0.0-rc.8</small></h1>
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<h1 id="parsequerystring-string-">parseQueryString(string)</h1>
<ul>
<li>Core<ul>
<li><a href="hyperscript.html">m</a></li>
<li><a href="render.html">m.render</a></li>
<li><a href="mount.html">m.mount</a></li>
<li><a href="route.html">m.route</a></li>
<li><a href="request.html">m.request</a></li>
<li><a href="jsonp.html">m.jsonp</a></li>
<li><strong><a href="parseQueryString.html">m.parseQueryString</a></strong><ul>
<li><a href="#description">Description</a></li>
<li><a href="#signature">Signature</a></li>
<li><a href="#how-it-works">How it works</a></li>
</ul>
</li>
<li><a href="buildQueryString.html">m.buildQueryString</a></li>
<li><a href="withAttr.html">m.withAttr</a></li>
<li><a href="trust.html">m.trust</a></li>
<li><a href="fragment.html">m.fragment</a></li>
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<h3 id="description">Description</h3>
<p>Turns a string of the form <code>?a=1&amp;b=2</code> to an object</p>
<pre><code class="lang-javascript">var object = m.parseQueryString(&quot;a=1&amp;b=2&quot;)
// {a: &quot;1&quot;, b: &quot;2&quot;}
</code></pre>
<hr>
<h3 id="signature">Signature</h3>
<p><code>object = m.parseQueryString(string)</code></p>
<table>
<thead>
<tr>
<th>Argument</th>
<th>Type</th>
<th>Required</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>string</code></td>
<td><code>String</code></td>
<td>Yes</td>
<td>A querystring</td>
</tr>
<tr>
<td><strong>returns</strong></td>
<td><code>Object</code></td>
<td></td>
<td>A key-value map</td>
</tr>
</tbody>
</table>
<p><a href="signatures.html">How to read signatures</a></p>
<hr>
<h3 id="how-it-works">How it works</h3>
<p>The <code>m.parseQueryString</code> method creates an object from a querystring. It is useful for handling data from URL</p>
<pre><code class="lang-javascript">var data = m.parseQueryString(&quot;a=hello&amp;b=world&quot;)
// data is {a: &quot;hello&quot;, b: &quot;world&quot;}
</code></pre>
<h4 id="boolean-type-casting">Boolean type casting</h4>
<p>This method attempts to cast boolean values if possible. This helps prevents bugs related to loose truthiness and unintended type casts.</p>
<pre><code class="lang-javascript">var data = m.parseQueryString(&quot;a=true&amp;b=false&quot;)
// data is {a: true, b: false}
</code></pre>
<h4 id="leading-question-mark-tolerance">Leading question mark tolerance</h4>
<p>For convenience, the <code>m.parseQueryString</code> method ignores a leading question mark, if present:</p>
<pre><code class="lang-javascript">var data = m.parseQueryString(&quot;?a=hello&amp;b=world&quot;)
// data is {a: &quot;hello&quot;, b: &quot;world&quot;}
</code></pre>
<h4 id="deep-data-structures">Deep data structures</h4>
<p>Querystrings that contain bracket notation are correctly parsed into deep data structures</p>
<pre><code class="lang-javascript">m.parseQueryString(&quot;a[0]=hello&amp;a[1]=world&quot;)
// data is {a: [&quot;hello&quot;, &quot;world&quot;]}
</code></pre>
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<small>License: MIT. &copy; Leo Horie.</small>
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