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----
-title: Math
-slug: Web/JavaScript/Reference/Global_Objects/Math
-translation_of: Web/JavaScript/Reference/Global_Objects/Math
----
-<div>{{JSRef}}</div>
-
-<p>Math è un oggetto precostruito che possiede proprietà e metodi per restituire i risultati di costanti e funzioni matematiche. Math non è una funzione.</p>
-
-<h2 id="Descrizione">Descrizione</h2>
-
-<p>Diversamente dagli altri oggetti globali, Math non è un costruttore. Tutte le proprietà e i metodi di Math sono statici. Per riferirsi alla costante Pi si usa  Math.PI e per chiamare la funzione Seno si usa Math.sin(x) , dove x è l'argomento del metodo. Le costanti sono definite con la piena precisione dei numeri reali in JavaScript.</p>
-
-<h2 id="Proprietà">Proprietà</h2>
-
-<dl>
- <dt>{{jsxref("Math.E")}}</dt>
- <dd>Costante di Eulero e base dei logaritmi naturali, approssimativamente 2.718.</dd>
- <dt>{{jsxref("Math.LN2")}}</dt>
- <dd>Logaritmo naturale di 2, approssimativamente 0.693.</dd>
- <dt>{{jsxref("Math.LN10")}}</dt>
- <dd>Logaritmo naturale di 10, approssimativamente 0.693.</dd>
- <dt>{{jsxref("Math.LOG2E")}}</dt>
- <dd>Logaritmo a base 2 di E, approssimativamente 1.443.</dd>
- <dt>{{jsxref("Math.LOG10E")}}</dt>
- <dd>Logaritmo a base 10 di E, approssimativamente 1.443.</dd>
- <dt>{{jsxref("Math.PI")}}</dt>
- <dd>Rapporto tra la circonferenza di un cerchio ed il suo diametro, approssimativamente 3.14159.</dd>
- <dt>{{jsxref("Math.SQRT1_2")}}</dt>
- <dd>Radice quadrata di 1/2  ; equivale a 1 fratto la radice quadrata di 2, approsimativamente  0.707.</dd>
- <dt>{{jsxref("Math.SQRT2")}}</dt>
- <dd>Radice quadrata di 2, approssimativamente 1.414.</dd>
-</dl>
-
-<h2 id="Metodi">Metodi</h2>
-
-<div class="note">
-<p>Ricorda che le funzioni trigonometriche (<code>sin()</code>, <code>cos()</code>, <code>tan()</code>, <code>asin()</code>, <code>acos()</code>, <code>atan()</code>, <code>atan2()</code>) si aspettano e restituiscono gli angoli in radianti. To convert radians to degrees, divide by <code>(Math.PI / 180)</code>, and multiply by this to convert the other way.</p>
-</div>
-
-<div class="note">
-<p>Ricorda che la precisione di molte delle funzioni matematiche è dipendente dall'sistema di implementazione. questo significa che browser differenti possono dare risultati diversi, e anche lo stessomotore JS su un differente sistema operativo o architettura può dare risultati discordi.</p>
-</div>
-
-<dl>
- <dt>{{jsxref("Global_Objects/Math/abs", "Math.abs(x)")}}</dt>
- <dd>Returns the absolute value of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/acos", "Math.acos(x)")}}</dt>
- <dd>Returns the arccosine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/acosh", "Math.acosh(x)")}}</dt>
- <dd>Returns the hyperbolic arccosine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/asin", "Math.asin(x)")}}</dt>
- <dd>Returns the arcsine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/asinh", "Math.asinh(x)")}}</dt>
- <dd>Returns the hyperbolic arcsine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/atan", "Math.atan(x)")}}</dt>
- <dd>Returns the arctangent of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/atanh", "Math.atanh(x)")}}</dt>
- <dd>Returns the hyperbolic arctangent of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/atan2", "Math.atan2(y, x)")}}</dt>
- <dd>Returns the arctangent of the quotient of its arguments.</dd>
- <dt>{{jsxref("Global_Objects/Math/cbrt", "Math.cbrt(x)")}}</dt>
- <dd>Returns the cube root of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/ceil", "Math.ceil(x)")}}</dt>
- <dd>Returns the smallest integer greater than or equal to a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/clz32", "Math.clz32(x)")}}</dt>
- <dd>Returns the number of leading zeroes of a 32-bit integer.</dd>
- <dt>{{jsxref("Global_Objects/Math/cos", "Math.cos(x)")}}</dt>
- <dd>Returns the cosine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/cosh", "Math.cosh(x)")}}</dt>
- <dd>Returns the hyperbolic cosine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/exp", "Math.exp(x)")}}</dt>
- <dd>Returns E<sup>x</sup>, where <var>x</var> is the argument, and E is Euler's constant (2.718…), the base of the natural logarithm.</dd>
- <dt>{{jsxref("Global_Objects/Math/expm1", "Math.expm1(x)")}}</dt>
- <dd>Returns subtracting 1 from <code>exp(x)</code>.</dd>
- <dt>{{jsxref("Global_Objects/Math/floor", "Math.floor(x)")}}</dt>
- <dd>Returns the largest integer less than or equal to a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/fround", "Math.fround(x)")}}</dt>
- <dd>Returns the nearest <a href="http://en.wikipedia.org/wiki/Single-precision_floating-point_format" title="link to the wikipedia page on single precision">single precision</a> float representation of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/hypot", "Math.hypot([x[, y[, …]]])")}}</dt>
- <dd>Returns the square root of the sum of squares of its arguments.</dd>
- <dt>{{jsxref("Global_Objects/Math/imul", "Math.imul(x, y)")}}</dt>
- <dd>Returns the result of a 32-bit integer multiplication.</dd>
- <dt>{{jsxref("Global_Objects/Math/log", "Math.log(x)")}}</dt>
- <dd>Returns the natural logarithm (log<sub>e</sub>, also ln) of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/log1p", "Math.log1p(x)")}}</dt>
- <dd>Returns the natural logarithm of <code>1 + x</code> (log<sub>e</sub>, also ln) of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/log10", "Math.log10(x)")}}</dt>
- <dd>Returns the base 10 logarithm of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/log2", "Math.log2(x)")}}</dt>
- <dd>Returns the base 2 logarithm of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/max", "Math.max([x[, y[, …]]])")}}</dt>
- <dd>Returns the largest of zero or more numbers.</dd>
- <dt>{{jsxref("Global_Objects/Math/min", "Math.min([x[, y[, …]]])")}}</dt>
- <dd>Returns the smallest of zero or more numbers.</dd>
- <dt>{{jsxref("Global_Objects/Math/pow", "Math.pow(x, y)")}}</dt>
- <dd>Returns base to the exponent power, that is, <code>base<sup>exponent</sup></code>.</dd>
- <dt>{{jsxref("Global_Objects/Math/random", "Math.random()")}}</dt>
- <dd>Returns a pseudo-random number between 0 and 1.</dd>
- <dt>{{jsxref("Global_Objects/Math/round", "Math.round(x)")}}</dt>
- <dd>Returns the value of a number rounded to the nearest integer.</dd>
- <dt>{{jsxref("Global_Objects/Math/sign", "Math.sign(x)")}}</dt>
- <dd>Returns the sign of the x, indicating whether x is positive, negative or zero.</dd>
- <dt>{{jsxref("Global_Objects/Math/sin", "Math.sin(x)")}}</dt>
- <dd>Returns the sine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/sinh", "Math.sinh(x)")}}</dt>
- <dd>Returns the hyperbolic sine of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/sqrt", "Math.sqrt(x)")}}</dt>
- <dd>Returns the positive square root of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/tan", "Math.tan(x)")}}</dt>
- <dd>Returns the tangent of a number.</dd>
- <dt>{{jsxref("Global_Objects/Math/tanh", "Math.tanh(x)")}}</dt>
- <dd>Returns the hyperbolic tangent of a number.</dd>
- <dt><code>Math.toSource()</code> {{non-standard_inline}}</dt>
- <dd>Returns the string <code>"Math"</code>.</dd>
- <dt>{{jsxref("Global_Objects/Math/trunc", "Math.trunc(x)")}}</dt>
- <dd>Returns the integral part of the number x, removing any fractional digits.</dd>
-</dl>
-
-<h2 id="Specifications">Specifications</h2>
-
-<table class="standard-table">
- <tbody>
-  <tr>
-   <th scope="col">Specification</th>
-   <th scope="col">Status</th>
-   <th scope="col">Comment</th>
-  </tr>
-  <tr>
-   <td>{{SpecName('ES1')}}</td>
-   <td>{{Spec2('ES1')}}</td>
-   <td>Initial definition. Implemented in JavaScript 1.1.</td>
-  </tr>
-  <tr>
-   <td>{{SpecName('ES5.1', '#sec-15.8', 'Math')}}</td>
-   <td>{{Spec2('ES5.1')}}</td>
-   <td> </td>
-  </tr>
-  <tr>
-   <td>{{SpecName('ES6', '#sec-math-object', 'Math')}}</td>
-   <td>{{Spec2('ES6')}}</td>
-   <td>New methods {{jsxref("Math.log10()", "log10()")}}, {{jsxref("Math.log2()", "log2()")}}, {{jsxref("Math.log1p()", "log1p()")}}, {{jsxref("Math.expm1()", "expm1()")}}, {{jsxref("Math.cosh()", "cosh()")}}, {{jsxref("Math.sinh()", "sinh()")}}, {{jsxref("Math.tanh()", "tanh()")}}, {{jsxref("Math.acosh()", "acosh()")}}, {{jsxref("Math.asinh()", "asinh()")}}, {{jsxref("Math.atanh()", "atanh()")}}, {{jsxref("Math.hypot()", "hypot()")}}, {{jsxref("Math.trunc()", "trunc()")}}, {{jsxref("Math.sign()", "sign()")}}, {{jsxref("Math.imul()", "imul()")}}, {{jsxref("Math.fround()", "fround()")}}, {{jsxref("Math.cbrt()", "cbrt()")}} and {{jsxref("Math.clz32()", "clz32()")}} added.</td>
-  </tr>
-  <tr>
-   <td>{{SpecName('ESDraft', '#sec-math-object', 'Math')}}</td>
-   <td>{{Spec2('ESDraft')}}</td>
-   <td> </td>
-  </tr>
- </tbody>
-</table>
-
-<h2 id="Browser_compatibility">Browser compatibility</h2>
-
-<div>{{CompatibilityTable}}</div>
-
-<div id="compat-desktop">
-<table class="compat-table">
- <tbody>
-  <tr>
-   <th>Feature</th>
-   <th>Chrome</th>
-   <th>Firefox (Gecko)</th>
-   <th>Internet Explorer</th>
-   <th>Opera</th>
-   <th>Safari</th>
-  </tr>
-  <tr>
-   <td>Basic support</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-  </tr>
- </tbody>
-</table>
-</div>
-
-<div id="compat-mobile">
-<table class="compat-table">
- <tbody>
-  <tr>
-   <th>Feature</th>
-   <th>Android</th>
-   <th>Chrome for Android</th>
-   <th>Firefox Mobile (Gecko)</th>
-   <th>IE Mobile</th>
-   <th>Opera Mobile</th>
-   <th>Safari Mobile</th>
-  </tr>
-  <tr>
-   <td>Basic support</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-   <td>{{CompatVersionUnknown}}</td>
-  </tr>
- </tbody>
-</table>
-</div>
-
-<h2 id="See_also">See also</h2>
-
-<ul>
- <li>{{jsxref("Number")}}</li>
-</ul>