<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- number.qdoc --> <title>Number QML Type | Qt QML 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</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"><a href="qtqml-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#methods">Methods</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">Number QML Type</h1> <span class="subtitle"></span> <!-- $$$Number-brief --> <p>The Number object provides represents a number value. <a href="#details">More...</a></p> <!-- @@@Number --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQml 2.12</td></tr></table></div><ul> <li><a href="qml-qtqml-number-members.html">List of all members, including inherited members</a></li> </ul> <a name="methods"></a> <h2 id="methods">Methods</h2> <ul> <li class="fn">string <b><b><a href="qml-qtqml-number.html#fromLocaleString-method">fromLocaleString</a></b></b>(<i>locale</i>, <i>number</i>)</li> <li class="fn">string <b><b><a href="qml-qtqml-number.html#toLocaleCurrencyString-method">toLocaleCurrencyString</a></b></b>(<i>locale</i>, <i>symbol</i>)</li> <li class="fn">string <b><b><a href="qml-qtqml-number.html#toLocaleString-method">toLocaleString</a></b></b>(<i>locale</i>, <i>format</i>, <i>precision</i>)</li> </ul> <!-- $$$Number-description --> <a name="details"></a> <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> <!-- @@@Number --> <h2>Method Documentation</h2> <!-- $$$fromLocaleString --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="fromLocaleString-method"> <td class="tblQmlFuncNode"><p> <a name="fromLocaleString-method"></a><span class="type"><a href="qml-string.html">string</a></span> <span class="name">fromLocaleString</span>(<i>locale</i>, <i>number</i>)</p></td></tr> </table></div> </div><div class="qmldoc"><p>Returns a Number by parsing <i>number</i> using the conventions of the supplied <i>locale</i>.</p> <p>If <i>locale</i> is not supplied the default locale will be used.</p> <p>For example, using the German locale:</p> <pre class="cpp"> var german <span class="operator">=</span> <span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">.</span>locale(<span class="string">"de_DE"</span>); var d; d <span class="operator">=</span> Number<span class="operator">.</span>fromLocaleString(german<span class="operator">,</span> <span class="string">"1234,56"</span>) <span class="comment">// d == 1234.56</span> d <span class="operator">=</span> Number<span class="operator">.</span>fromLocaleString(german<span class="operator">,</span> <span class="string">"1.234,56"</span>) <span class="comment">// d == 1234.56</span> d <span class="operator">=</span> Number<span class="operator">.</span>fromLocaleString(german<span class="operator">,</span> <span class="string">"1234.56"</span>) <span class="comment">// throws exception</span> d <span class="operator">=</span> Number<span class="operator">.</span>fromLocaleString(german<span class="operator">,</span> <span class="string">"1.234"</span>) <span class="comment">// d == 1234.0</span> </pre> </div></div><!-- @@@fromLocaleString --> <br/> <!-- $$$toLocaleCurrencyString --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="toLocaleCurrencyString-method"> <td class="tblQmlFuncNode"><p> <a name="toLocaleCurrencyString-method"></a><span class="type"><a href="qml-string.html">string</a></span> <span class="name">toLocaleCurrencyString</span>(<i>locale</i>, <i>symbol</i>)</p></td></tr> </table></div> </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 --> <br/> <!-- $$$toLocaleString --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="toLocaleString-method"> <td class="tblQmlFuncNode"><p> <a name="toLocaleString-method"></a><span class="type"><a href="qml-string.html">string</a></span> <span class="name">toLocaleString</span>(<i>locale</i>, <i>format</i>, <i>precision</i>)</p></td></tr> </table></div> </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 --> <br/> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>