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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:41:15 -0500 |
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| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:41:15 -0500 |
| commit | 4b1a9203c547c019fc5398082ae19a3f3d4c3efe (patch) | |
| tree | d4a40e13ceeb9f85479605110a76e7a4d5f3b56b /files/ca/web/javascript/reference/global_objects/function/caller | |
| parent | 33058f2b292b3a581333bdfb21b8f671898c5060 (diff) | |
| download | translated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.tar.gz translated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.tar.bz2 translated-content-4b1a9203c547c019fc5398082ae19a3f3d4c3efe.zip | |
initial commit
Diffstat (limited to 'files/ca/web/javascript/reference/global_objects/function/caller')
| -rw-r--r-- | files/ca/web/javascript/reference/global_objects/function/caller/index.html | 124 |
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diff --git a/files/ca/web/javascript/reference/global_objects/function/caller/index.html b/files/ca/web/javascript/reference/global_objects/function/caller/index.html new file mode 100644 index 0000000000..613e163d6a --- /dev/null +++ b/files/ca/web/javascript/reference/global_objects/function/caller/index.html @@ -0,0 +1,124 @@ +--- +title: Function.caller +slug: Web/JavaScript/Reference/Global_Objects/Function/caller +translation_of: Web/JavaScript/Reference/Global_Objects/Function/caller +--- +<div>{{JSRef}} {{non-standard_header}}</div> + +<p>La propietat <code><strong><em>function</em>.caller</strong></code> retorna la funció que ha invocat la funció especificada.</p> + +<h2 id="Descripció">Descripció</h2> + +<p>SI la funció <code>f</code> ha estat invocada pel codi de nivell superior, el valor de <code>f.caller</code> és {{jsxref("null")}}, sinó és la funció que ha cridat <code>f</code>.</p> + +<p>Aquesta propietat reemplaça la propietat obsoleta {{jsxref("Functions/arguments/caller", "arguments.caller")}} de l'objecte {{jsxref("Functions/arguments", "arguments")}}.</p> + +<p>La propietat especial <code>__caller__</code>, la qual retorna l'objecte activatwhich returned the activation object of the caller thus allowing to reconstruct the stack, was removed for security reasons.</p> + +<h3 id="Notes">Notes</h3> + +<p>Vegeu que en cas de recursió, no podeu reconstruir la pila de crida fent servir aquesta propietat. C that in case of recursion, you can't reconstruct the call stack using this property. Tingueu en compte:</p> + +<pre class="brush: js">function f(n) { g(n - 1); } +function g(n) { if (n > 0) { f(n); } else { stop(); } } +f(2); +</pre> + +<p>At the moment <code>stop()</code> is called the call stack will be:</p> + +<pre class="brush: js">f(2) -> g(1) -> f(1) -> g(0) -> stop() +</pre> + +<p>El següent és cert:</p> + +<pre class="brush: js">stop.caller === g && f.caller === g && g.caller === f +</pre> + +<p>so if you tried to get the stack trace in the <code>stop()</code> function like this:</p> + +<pre class="brush: js">var f = stop; +var stack = 'Stack trace:'; +while (f) { + stack += '\n' + f.name; + f = f.caller; +} +</pre> + +<p>El bucle mai s'aturaria.</p> + +<h2 id="Exemples">Exemples</h2> + +<h3 id="Checking_the_value_of_a_function's_caller_property">Checking the value of a function's <code>caller</code> property</h3> + +<p>El codi següent comprova que el valor following code checks the value a function's <code>caller</code> property.</p> + +<pre class="brush: js">function myFunc() { + if (myFunc.caller == null) { + return 'The function was called from the top!'; + } else { + return 'This function\'s caller was ' + myFunc.caller; + } +} +</pre> + +<h2 id="Especificacions">Especificacions</h2> + +<p>No forma part de cap especificació. Implementat en JavaScript 1.5.</p> + +<h2 id="Compatibilitat_amb_navegadors">Compatibilitat amb navegadors</h2> + +<div>{{CompatibilityTable}}</div> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari</th> + </tr> + <tr> + <td>Suport bàsic</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatGeckoDesktop("1.0")}}</td> + <td>8.0</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Android</th> + <th>Chrome per Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + </tr> + <tr> + <td>Suport bàsic</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatGeckoMobile("1.0")}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="Vegeu_també">Vegeu també</h2> + +<ul> + <li>Error d'Implementació de SpiderMonkey {{bug(65683)}}</li> +</ul> |
