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<td >Qt 5.9</td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-qmlmodule.html">QML Types</a></td><td >Number QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.5 Reference Documentation</td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#methods">Methods</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">Number QML Type</h1>
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<p>The Number object provides represents a number value <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQml 2.2</td></tr></table></div><ul>
<li><a href="qml-qtqml-number-members.html">List of all members, including inherited members</a></li>
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<h2 id="methods">Methods</h2>
<ul>
<li class="fn">string <b><b><a href="qml-qtqml-number.html#fromLocaleString-method">fromLocaleString</a></b></b>(<i>locale</i>, <i>number</i>)</li>
<li class="fn">string <b><b><a href="qml-qtqml-number.html#toLocaleCurrencyString-method">toLocaleCurrencyString</a></b></b>(<i>locale</i>, <i>symbol</i>)</li>
<li class="fn">string <b><b><a href="qml-qtqml-number.html#toLocaleString-method">toLocaleString</a></b></b>(<i>locale</i>, <i>format</i>, <i>precision</i>)</li>
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<h2 id="details">Detailed Description</h2>
<p>The QML Number object extends the JS Number object with locale aware functions.</p>
<p><b>See also </b><a href="qml-qtqml-locale.html">Locale</a>.</p>
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<h2>Method Documentation</h2>
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<tr valign="top" class="odd" id="fromLocaleString-method">
<td class="tblQmlFuncNode"><p>
<a name="fromLocaleString-method"></a><span class="type">string</span> <span class="name">fromLocaleString</span>(<i>locale</i>, <i>number</i>)</p></td></tr>
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</div><div class="qmldoc"><p>Returns a Number by parsing <i>number</i> using the conventions of the supplied <i>locale</i>.</p>
<p>If <i>locale</i> is not supplied the default locale will be used.</p>
<p>For example, using the German locale:</p>
<pre class="cpp">
var german <span class="operator">=</span> <span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>);
var d;
d <span class="operator">=</span> Number<span class="operator">.</span>fromLocaleString(german<span class="operator">,</span> <span class="string">"1234,56) // d == 1234.56
d = Number.fromLocaleString(german, "</span><span class="number">1.234</span><span class="operator">,</span><span class="number">56</span><span class="string">") // d == 1234.56
d = Number.fromLocaleString(german, "</span><span class="number">1234.56</span><span class="string">") // throws exception
d = Number.fromLocaleString(german, "</span><span class="number">1.234</span><span class="string">") // d == 1234.0
</span>
</pre>
</div></div><!-- @@@fromLocaleString -->
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<div class="qmlitem"><div class="qmlproto">
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<tr valign="top" class="odd" id="toLocaleCurrencyString-method">
<td class="tblQmlFuncNode"><p>
<a name="toLocaleCurrencyString-method"></a><span class="type">string</span> <span class="name">toLocaleCurrencyString</span>(<i>locale</i>, <i>symbol</i>)</p></td></tr>
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</div><div class="qmldoc"><p>Converts the Number to a currency using the currency and conventions of the specified <i>locale</i>. If <i>symbol</i> is specified it will be used as the currency symbol.</p>
<p><b>See also </b><a href="qml-qtqml-locale.html#currencySymbol-method">Locale::currencySymbol()</a>.</p>
</div></div><!-- @@@toLocaleCurrencyString -->
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<tr valign="top" class="odd" id="toLocaleString-method">
<td class="tblQmlFuncNode"><p>
<a name="toLocaleString-method"></a><span class="type">string</span> <span class="name">toLocaleString</span>(<i>locale</i>, <i>format</i>, <i>precision</i>)</p></td></tr>
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</div><div class="qmldoc"><p>Converts the Number to a string suitable for the specified <i>locale</i> in the specified <i>format</i>, with the specified <i>precision</i>.</p>
<p>Valid formats are:</p>
<ul>
<li>'f' Decimal floating point, e.g. 248.65</li>
<li>'e' Scientific notation using e character, e.g. 2.4865e+2</li>
<li>'E' Scientific notation using E character, e.g. 2.4865E+2</li>
<li>'g' Use the shorter of e or f</li>
<li>'G' Use the shorter of E or f</li>
</ul>
<p>If precision is not specified, the precision will be 2.</p>
<p>If the format is not specified 'f' will be used.</p>
<p>If <i>locale</i> is not specified, the default locale will be used.</p>
<p>The following example shows a number formatted for the German locale:</p>
<pre class="cpp">
import <span class="type">QtQuick</span> <span class="number">2.0</span>
Text {
text: <span class="string">"The value is: "</span> <span class="operator">+</span> Number(<span class="number">4742378.423</span>)<span class="operator">.</span>toLocaleString(<span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>))
}
</pre>
<p>You can apply toLocaleString() directly to constants, provided the decimal is included in the constant, e.g.</p>
<pre class="cpp">
<span class="number">123.0.toLocaleString</span>(<span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>)) <span class="comment">// OK</span>
<span class="number">123..toLocaleString</span>(<span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>)) <span class="comment">// OK</span>
<span class="number">123.toLocaleString</span>(<span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>)) <span class="comment">// fails</span>
</pre>
</div></div><!-- @@@toLocaleString -->
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