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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
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| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
| commit | 074785cea106179cb3305637055ab0a009ca74f2 (patch) | |
| tree | e6ae371cccd642aa2b67f39752a2cdf1fd4eb040 /files/pt-br/web/api/formdata/has | |
| parent | da78a9e329e272dedb2400b79a3bdeebff387d47 (diff) | |
| download | translated-content-074785cea106179cb3305637055ab0a009ca74f2.tar.gz translated-content-074785cea106179cb3305637055ab0a009ca74f2.tar.bz2 translated-content-074785cea106179cb3305637055ab0a009ca74f2.zip | |
initial commit
Diffstat (limited to 'files/pt-br/web/api/formdata/has')
| -rw-r--r-- | files/pt-br/web/api/formdata/has/index.html | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/files/pt-br/web/api/formdata/has/index.html b/files/pt-br/web/api/formdata/has/index.html new file mode 100644 index 0000000000..d9cdeff60b --- /dev/null +++ b/files/pt-br/web/api/formdata/has/index.html @@ -0,0 +1,81 @@ +--- +title: FormData.has() +slug: Web/API/FormData/has +tags: + - API + - FormData + - Referencia + - XHR + - XMLHttlRequest + - has + - metodo +translation_of: Web/API/FormData/has +--- +<p>{{APIRef("XMLHttpRequest")}}</p> + +<p>O método <code><strong>has()</strong></code> da interface {{domxref("FormData")}} retorna um booleano declarando se o objeto <code>FormData</code> contém uma certa chave.</p> + +<div class="note"> +<p><strong>Note</strong>: This method is available in <a href="/en-US/docs/Web/API/Web_Workers_API">Web Workers</a>.</p> +</div> + +<h2 id="Sintaxe">Sintaxe</h2> + +<pre class="brush: js">formData.has(name);</pre> + +<h3 id="append_Parameters" name="append()_Parameters">Parâmetros</h3> + +<dl> + <dt><code>name</code></dt> + <dd>Uma {{domxref("USVString")}} que representa o nome da chave que você que testar.</dd> +</dl> + +<h3 id="Retorna">Retorna</h3> + +<p>Um {{domxref("Boolean")}}.</p> + +<h2 id="Exemplo">Exemplo</h2> + +<p>A linha a seguir cria um objeto <code>FormData</code> vazio:</p> + +<pre class="brush: js">var formData = new FormData();</pre> + +<p>O trecho a seguir mostra os resultados de testar a existência de <code>username</code> no objeto <code>FormData</code>, antes e depois de acrescentar um valor de <code>username</code> no objeto usando {{domxref("FormData.append")}}:</p> + +<pre class="brush: js">formData.has('username'); // Retorna false +formData.append('username', 'Chris'); +formData.has('username'); // Retorna true + +</pre> + +<h2 id="Especificações">Especificações</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Especificação</th> + <th scope="col">Status</th> + <th scope="col">Comentário</th> + </tr> + <tr> + <td>{{SpecName('XMLHttpRequest','#dom-formdata-has','has()')}}</td> + <td>{{Spec2('XMLHttpRequest')}}</td> + <td></td> + </tr> + </tbody> +</table> + +<h2 id="Compatibilidade_de_navegador">Compatibilidade de navegador</h2> + + + +<p>{{Compat("api.FormData.has")}}</p> + +<h2 id="Veja_também">Veja também</h2> + +<ul> + <li>{{domxref("XMLHTTPRequest")}}</li> + <li><a href="/en-US/docs/DOM/XMLHttpRequest/Using_XMLHttpRequest" title="Using XMLHttpRequest">Using XMLHttpRequest</a></li> + <li><a href="/en-US/docs/DOM/XMLHttpRequest/FormData/Using_FormData_Objects" title="DOM/XMLHttpRequest/FormData/Using_FormData_objects">Using FormData objects</a></li> + <li>{{HTMLElement("Form")}}</li> +</ul> |
