aboutsummaryrefslogtreecommitdiff
path: root/files/de/web/javascript/reference/global_objects/math/floor
diff options
context:
space:
mode:
authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:41:15 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:41:15 -0500
commit4b1a9203c547c019fc5398082ae19a3f3d4c3efe (patch)
treed4a40e13ceeb9f85479605110a76e7a4d5f3b56b /files/de/web/javascript/reference/global_objects/math/floor
parent33058f2b292b3a581333bdfb21b8f671898c5060 (diff)
downloadtranslated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.tar.gz
translated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.tar.bz2
translated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.zip
initial commit
Diffstat (limited to 'files/de/web/javascript/reference/global_objects/math/floor')
-rw-r--r--files/de/web/javascript/reference/global_objects/math/floor/index.html137
1 files changed, 137 insertions, 0 deletions
diff --git a/files/de/web/javascript/reference/global_objects/math/floor/index.html b/files/de/web/javascript/reference/global_objects/math/floor/index.html
new file mode 100644
index 0000000000..68f8bf86fa
--- /dev/null
+++ b/files/de/web/javascript/reference/global_objects/math/floor/index.html
@@ -0,0 +1,137 @@
+---
+title: Math.floor()
+slug: Web/JavaScript/Reference/Global_Objects/Math/floor
+tags:
+ - JavaScript
+ - Math
+ - Method
+ - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/floor
+---
+<div>{{JSRef}}</div>
+
+<p>Die <strong><code>Math.floor()</code></strong> Funktion gibt den größten Integer zurück, der kleiner oder gleich der gegeben Nummer ist. (Abrunden) </p>
+
+<div>{{EmbedInteractiveExample("pages/js/math-floor.html")}}</div>
+
+<div class="hidden">The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone <a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a> and send us a pull request.</div>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox">Math.floor(<var>x</var>)</pre>
+
+<h3 id="Parameter">Parameter</h3>
+
+<dl>
+ <dt><code>x</code></dt>
+ <dd>Eine Zahl.</dd>
+</dl>
+
+<h3 id="Rückgabewert">Rückgabewert</h3>
+
+<p>Eine größte ganze Zahl, die kleiner oder gleich der übergebenen Zahl ist.</p>
+
+<h2 id="Beschreibung">Beschreibung</h2>
+
+<p>Weil <code>floor()</code> eine statische Methode von <code>Math</code> ist, wird sie immer als<code> Math.floor() </code>aufgerufen und nicht als eine Methode eines erstellten <code>Math</code> Objektes (<code>Math </code>ist kein Konstruktor).</p>
+
+<div class="blockIndicator note">
+<p><strong>Hinweis: </strong><code>Math.floor(null)</code> gibt 0, aber nicht {{jsxref("NaN")}}, zurück.</p>
+</div>
+
+<h2 id="Beispiele">Beispiele</h2>
+
+<h3 id="Einsatz_von_Math.floor">Einsatz von <code>Math.floor()</code></h3>
+
+<pre class="brush: js">Math.floor(45.95); // 45
+Math.floor(45.05); // 45
+Math.floor(4); // 4
+Math.floor(-45.05); // -46
+Math.floor(-45.95); // -46
+</pre>
+
+<h3 id="Dezimale_Justierung">Dezimale Justierung</h3>
+
+<pre class="brush: js">/**
+ * Decimal adjustment of a number.
+ *
+ * @param {String} type The type of adjustment.
+ * @param {Number} value The number.
+ * @param {Integer} exp The exponent (the 10 logarithm of the adjustment base).
+ * @returns {Number} The adjusted value.
+ */
+function decimalAdjust(type, value, exp) {
+ // If the exp is undefined or zero...
+ if (typeof exp === 'undefined' || +exp === 0) {
+ return Math[type](value);
+ }
+ value = +value;
+ exp = +exp;
+ // If the value is not a number or the exp is not an integer...
+ if (isNaN(value) || !(typeof exp === 'number' &amp;&amp; exp % 1 === 0)) {
+ return NaN;
+ }
+ // Shift
+ value = value.toString().split('e');
+ value = Math[type](+(value[0] + 'e' + (value[1] ? (+value[1] - exp) : -exp)));
+ // Shift back
+ value = value.toString().split('e');
+ return +(value[0] + 'e' + (value[1] ? (+value[1] + exp) : exp));
+}
+
+// Decimal round
+const round10 = (value, exp) =&gt; decimalAdjust('round', value, exp);
+// Decimal floor
+const floor10 = (value, exp) =&gt; decimalAdjust('floor', value, exp);
+// Decimal ceil
+const ceil10 = (value, exp) =&gt; decimalAdjust('ceil', value, exp);
+
+// Round
+round10(55.55, -1); // 55.6
+round10(55.549, -1); // 55.5
+round10(55, 1); // 60
+round10(54.9, 1); // 50
+round10(-55.55, -1); // -55.5
+round10(-55.551, -1); // -55.6
+round10(-55, 1); // -50
+round10(-55.1, 1); // -60
+// Floor
+floor10(55.59, -1); // 55.5
+floor10(59, 1); // 50
+floor10(-55.51, -1); // -55.6
+floor10(-51, 1); // -60
+// Ceil
+ceil10(55.51, -1); // 55.6
+ceil10(51, 1); // 60
+ceil10(-55.59, -1); // -55.5
+ceil10(-59, 1); // -50
+</pre>
+
+<h2 id="Spezifikationen">Spezifikationen</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Spezifikation</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-math.floor', 'Math.floor')}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browserkompatibilität">Browserkompatibilität</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Math.floor")}}</p>
+
+<h2 id="Siehe_auch">Siehe auch</h2>
+
+<ul>
+ <li>{{jsxref("Math.abs()")}}</li>
+ <li>{{jsxref("Math.ceil()")}}</li>
+ <li>{{jsxref("Math.round()")}}</li>
+ <li>{{jsxref("Math.sign()")}}</li>
+ <li>{{jsxref("Math.trunc()")}}</li>
+</ul>