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| author | Ryan Johnson <rjohnson@mozilla.com> | 2021-04-29 16:16:42 -0700 |
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| committer | GitHub <noreply@github.com> | 2021-04-29 16:16:42 -0700 |
| commit | 95aca4b4d8fa62815d4bd412fff1a364f842814a (patch) | |
| tree | 5e57661720fe9058d5c7db637e764800b50f9060 /files/tr/web/javascript/reference/global_objects/array/findindex | |
| parent | ee3b1c87e3c8e72ca130943eed260ad642246581 (diff) | |
| download | translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.tar.gz translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.tar.bz2 translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.zip | |
remove retired locales (#699)
Diffstat (limited to 'files/tr/web/javascript/reference/global_objects/array/findindex')
| -rw-r--r-- | files/tr/web/javascript/reference/global_objects/array/findindex/index.html | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/files/tr/web/javascript/reference/global_objects/array/findindex/index.html b/files/tr/web/javascript/reference/global_objects/array/findindex/index.html deleted file mode 100644 index 8933892986..0000000000 --- a/files/tr/web/javascript/reference/global_objects/array/findindex/index.html +++ /dev/null @@ -1,177 +0,0 @@ ---- -title: Array.prototype.findIndex() -slug: Web/JavaScript/Reference/Global_Objects/Array/findIndex -translation_of: Web/JavaScript/Reference/Global_Objects/Array/findIndex ---- -<div>{{JSRef}}</div> - -<p>FindIndex () yöntemi, sağlanan test işlevini karşılayan dizideki ilk öğenin dizinini döndürür. Aksi takdirde -1 iade edilir.</p> - -<div>{{EmbedInteractiveExample("pages/js/array-findindex.html")}}</div> - -<p class="hidden">Bu interaktif örneğin için kaynak bir GitHub deposunda saklanır. Etkileşimli örnek projesine katkıda bulunmak isterseniz, lütfen https://github.com/mdn/interactive-examples klonlayın ve bize bir çekme isteği gönderin.</p> - -<div> </div> - -<p>Ayrıca, dizinde bulunan dizinin yerine bulunan bir öğenin değerini döndüren {{jsxref ("Array.find", "find ()")}} yöntemine de bakın.</p> - -<h2 id="Syntax">Syntax</h2> - -<pre class="syntaxbox"><var>arr</var>.findIndex(<var>callback</var>[, <var>thisArg</var>])</pre> - -<h3 id="Parameters">Parameters</h3> - -<dl> - <dt><code>callback</code></dt> - <dd>Function to execute on each value in the array, taking three arguments: - <dl> - <dt><code>element</code></dt> - <dd>The current element being processed in the array.</dd> - <dt><code>index</code>{{optional_inline}}</dt> - <dd>The index of the current element being processed in the array.</dd> - <dt><code>array</code>{{optional_inline}}</dt> - <dd>The array <code>findIndex</code> was called upon.</dd> - </dl> - </dd> - <dt><code>thisArg</code>{{optional_inline}}</dt> - <dd>Optional. Object to use as <code>this</code> when executing <code>callback</code>.</dd> -</dl> - -<h3 id="Return_value">Return value</h3> - -<p>An index in the array if an element passes the test; otherwise, <strong>-1</strong>.</p> - -<h2 id="Description">Description</h2> - -<p>The <code>findIndex</code> method executes the <code>callback</code> function once for every array index <code>0..length-1</code> (inclusive) in the array until it finds one where <code>callback</code> returns a truthy value (a value that coerces to <code>true</code>). If such an element is found, <code>findIndex</code> immediately returns the index for that iteration. If the callback never returns a truthy value or the array's <code>length</code> is 0, <code>findIndex</code> returns -1. Unlike some other array methods such as Array#some, in sparse arrays the <code>callback</code> <strong>is</strong> called even for indexes of entries not present in the array.</p> - -<p><code>callback</code> is invoked with three arguments: the value of the element, the index of the element, and the Array object being traversed.</p> - -<p>If a <code>thisArg</code> parameter is provided to <code>findIndex</code>, it will be used as the <code>this</code> for each invocation of the <code>callback</code>. If it is not provided, then {{jsxref("undefined")}} is used.</p> - -<p><code>findIndex</code> does not mutate the array on which it is called.</p> - -<p>The range of elements processed by <code>findIndex</code> is set before the first invocation of <code>callback</code>. Elements that are appended to the array after the call to <code>findIndex</code> begins will not be visited by <code>callback</code>. If an existing, unvisited element of the array is changed by <code>callback</code>, its value passed to the visiting <code>callback</code> will be the value at the time that <code>findIndex</code> visits that element's index; elements that are deleted are still visited.</p> - -<h2 id="Examples">Examples</h2> - -<h3 id="Find_the_index_of_a_prime_number_in_an_array">Find the index of a prime number in an array</h3> - -<p>The following example finds the index of an element in the array that is a prime number (or returns -1 if there is no prime number).</p> - -<pre class="brush: js">function isPrime(element, index, array) { - var start = 2; - while (start <= Math.sqrt(element)) { - if (element % start < 1) { - return false; - } else { - start++; - } - } - return element > 1; -} - -console.log([4, 6, 8, 12].findIndex(isPrime)); // -1, not found -console.log([4, 6, 7, 12].findIndex(isPrime)); // 2 -</pre> - -<h3 id="Find_index_using_arrow_function">Find index using arrow function</h3> - -<p>The following example finds the index of a fruit using an arrow function.</p> - -<pre class="brush: js">const fruits = ["apple", "banana", "cantaloupe", "blueberries", "grapefruit"]; - -const index = fruits.findIndex(fruit => fruit === "blueberries"); - -console.log(index); // 3 -console.log(fruits[index]); // blueberries -</pre> - -<h2 id="Polyfill">Polyfill</h2> - -<pre class="brush: js">// https://tc39.github.io/ecma262/#sec-array.prototype.findIndex -if (!Array.prototype.findIndex) { - Object.defineProperty(Array.prototype, 'findIndex', { - value: function(predicate) { - // 1. Let O be ? ToObject(this value). - if (this == null) { - throw new TypeError('"this" is null or not defined'); - } - - var o = Object(this); - - // 2. Let len be ? ToLength(? Get(O, "length")). - var len = o.length >>> 0; - - // 3. If IsCallable(predicate) is false, throw a TypeError exception. - if (typeof predicate !== 'function') { - throw new TypeError('predicate must be a function'); - } - - // 4. If thisArg was supplied, let T be thisArg; else let T be undefined. - var thisArg = arguments[1]; - - // 5. Let k be 0. - var k = 0; - - // 6. Repeat, while k < len - while (k < len) { - // a. Let Pk be ! ToString(k). - // b. Let kValue be ? Get(O, Pk). - // c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)). - // d. If testResult is true, return k. - var kValue = o[k]; - if (predicate.call(thisArg, kValue, k, o)) { - return k; - } - // e. Increase k by 1. - k++; - } - - // 7. Return -1. - return -1; - }, - configurable: true, - writable: true - }); -} -</pre> - -<p>If you need to support truly obsolete JavaScript engines that don't support <code><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty">Object.defineProperty</a></code>, it's best not to polyfill <code>Array.prototype</code> methods at all, as you can't make them non-enumerable.</p> - -<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('ES2015', '#sec-array.prototype.findindex', 'Array.prototype.findIndex')}}</td> - <td>{{Spec2('ES2015')}}</td> - <td>Initial definition.</td> - </tr> - <tr> - <td>{{SpecName('ESDraft', '#sec-array.prototype.findIndex', 'Array.prototype.findIndex')}}</td> - <td>{{Spec2('ESDraft')}}</td> - <td> </td> - </tr> - </tbody> -</table> - -<h2 id="Browser_compatibility">Browser compatibility</h2> - -<div> - - -<p>{{Compat("javascript.builtins.Array.findIndex")}}</p> -</div> - -<h2 id="See_also">See also</h2> - -<ul> - <li>{{jsxref("Array.prototype.find()")}}</li> - <li>{{jsxref("Array.prototype.indexOf()")}}</li> -</ul> |
