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diff --git a/plugins/af_readability/vendor/fivefilters/readability.php/test/test-pages/002/expected.html b/plugins/af_readability/vendor/fivefilters/readability.php/test/test-pages/002/expected.html index 0525100d6..564f9a915 100644 --- a/plugins/af_readability/vendor/fivefilters/readability.php/test/test-pages/002/expected.html +++ b/plugins/af_readability/vendor/fivefilters/readability.php/test/test-pages/002/expected.html @@ -1,4 +1,6 @@ -<div id="content-main"><article role="article"><p>For more than a decade the Web has used XMLHttpRequest (XHR) to achieve +<div id="content-main"> + <article role="article"> + <p>For more than a decade the Web has used XMLHttpRequest (XHR) to achieve asynchronous requests in JavaScript. While very useful, XHR is not a very nice API. It suffers from lack of separation of concerns. The input, output and state are all managed by interacting with one object, and state is @@ -13,10 +15,12 @@ <p>The <a href="https://fetch.spec.whatwg.org">Fetch specification</a>, which defines the API, nails down the semantics of a user agent fetching a resource. This, combined with ServiceWorkers, is an attempt to:</p> - <ol><li>Improve the offline experience.</li> + <ol> + <li>Improve the offline experience.</li> <li>Expose the building blocks of the Web to the platform as part of the <a href="https://extensiblewebmanifesto.org/">extensible web movement</a>.</li> - </ol><p>As of this writing, the Fetch API is available in Firefox 39 (currently + </ol> + <p>As of this writing, the Fetch API is available in Firefox 39 (currently Nightly) and Chrome 42 (currently dev). Github has a <a href="https://github.com/github/fetch">Fetch polyfill</a>.</p> <h2>Feature detection</h2> @@ -29,8 +33,7 @@ <p>The most useful, high-level part of the Fetch API is the <code>fetch()</code> function. In its simplest form it takes a URL and returns a promise that resolves to the response. The response is captured as a <code>Response</code> object.</p> - <div> - <div><pre>fetch<span>(</span><span>"/data.json"</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>res<span>)</span> <span>{</span> + <div><pre>fetch<span>(</span><span>"/data.json"</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>res<span>)</span> <span>{</span> <span>// res instanceof Response == true.</span> <span>if</span> <span>(</span>res.<span>ok</span><span>)</span> <span>{</span> res.<span>json</span><span>(</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>data<span>)</span> <span>{</span> @@ -42,10 +45,9 @@ <span>}</span><span>,</span> <span>function</span><span>(</span>e<span>)</span> <span>{</span> console.<span>log</span><span>(</span><span>"Fetch failed!"</span><span>,</span> e<span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>Submitting some parameters, it would look like this:</p> - <div> - <div><pre>fetch<span>(</span><span>"http://www.example.org/submit.php"</span><span>,</span> <span>{</span> + <div><pre>fetch<span>(</span><span>"http://www.example.org/submit.php"</span><span>,</span> <span>{</span> method<span>:</span> <span>"POST"</span><span>,</span> headers<span>:</span> <span>{</span> <span>"Content-Type"</span><span>:</span> <span>"application/x-www-form-urlencoded"</span> @@ -60,84 +62,84 @@ <span>}</span><span>,</span> <span>function</span><span>(</span>e<span>)</span> <span>{</span> alert<span>(</span><span>"Error submitting form!"</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>The <code>fetch()</code> function’s arguments are the same as those passed to the - <br></br><code>Request()</code> constructor, so you may directly pass arbitrarily + <br> +<code>Request()</code> constructor, so you may directly pass arbitrarily complex requests to <code>fetch()</code> as discussed below.</p> <h2>Headers</h2> <p>Fetch introduces 3 interfaces. These are <code>Headers</code>, <code>Request</code> and - <br></br><code>Response</code>. They map directly to the underlying HTTP concepts, + <br> +<code>Response</code>. They map directly to the underlying HTTP concepts, but have - <br></br>certain visibility filters in place for privacy and security reasons, + <br>certain visibility filters in place for privacy and security reasons, such as - <br></br>supporting CORS rules and ensuring cookies aren’t readable by third parties.</p> + <br>supporting CORS rules and ensuring cookies aren’t readable by third parties.</p> <p>The <a href="https://fetch.spec.whatwg.org/#headers-class">Headers interface</a> is a simple multi-map of names to values:</p> - <div> - <div><pre><span>var</span> content <span>=</span> <span>"Hello World"</span><span>;</span> + <div><pre><span>var</span> content <span>=</span> <span>"Hello World"</span><span>;</span> <span>var</span> reqHeaders <span>=</span> <span>new</span> Headers<span>(</span><span>)</span><span>;</span> reqHeaders.<span>append</span><span>(</span><span>"Content-Type"</span><span>,</span> <span>"text/plain"</span> reqHeaders.<span>append</span><span>(</span><span>"Content-Length"</span><span>,</span> content.<span>length</span>.<span>toString</span><span>(</span><span>)</span><span>)</span><span>;</span> reqHeaders.<span>append</span><span>(</span><span>"X-Custom-Header"</span><span>,</span> <span>"ProcessThisImmediately"</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>The same can be achieved by passing an array of arrays or a JS object literal - <br></br>to the constructor:</p> - <div> - <div><pre>reqHeaders <span>=</span> <span>new</span> Headers<span>(</span><span>{</span> + <br>to the constructor:</p> + <div><pre>reqHeaders <span>=</span> <span>new</span> Headers<span>(</span><span>{</span> <span>"Content-Type"</span><span>:</span> <span>"text/plain"</span><span>,</span> <span>"Content-Length"</span><span>:</span> content.<span>length</span>.<span>toString</span><span>(</span><span>)</span><span>,</span> <span>"X-Custom-Header"</span><span>:</span> <span>"ProcessThisImmediately"</span><span>,</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>The contents can be queried and retrieved:</p> - <div> - <div><pre>console.<span>log</span><span>(</span>reqHeaders.<span>has</span><span>(</span><span>"Content-Type"</span><span>)</span><span>)</span><span>;</span> <span>// true</span> + <div><pre>console.<span>log</span><span>(</span>reqHeaders.<span>has</span><span>(</span><span>"Content-Type"</span><span>)</span><span>)</span><span>;</span> <span>// true</span> console.<span>log</span><span>(</span>reqHeaders.<span>has</span><span>(</span><span>"Set-Cookie"</span><span>)</span><span>)</span><span>;</span> <span>// false</span> reqHeaders.<span>set</span><span>(</span><span>"Content-Type"</span><span>,</span> <span>"text/html"</span><span>)</span><span>;</span> reqHeaders.<span>append</span><span>(</span><span>"X-Custom-Header"</span><span>,</span> <span>"AnotherValue"</span><span>)</span><span>;</span> - + console.<span>log</span><span>(</span>reqHeaders.<span>get</span><span>(</span><span>"Content-Length"</span><span>)</span><span>)</span><span>;</span> <span>// 11</span> console.<span>log</span><span>(</span>reqHeaders.<span>getAll</span><span>(</span><span>"X-Custom-Header"</span><span>)</span><span>)</span><span>;</span> <span>// ["ProcessThisImmediately", "AnotherValue"]</span> - + reqHeaders.<span>delete</span><span>(</span><span>"X-Custom-Header"</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>reqHeaders.<span>getAll</span><span>(</span><span>"X-Custom-Header"</span><span>)</span><span>)</span><span>;</span> <span>// []</span></pre> - </div></div> + </div> <p>Some of these operations are only useful in ServiceWorkers, but they provide - <br></br>a much nicer API to Headers.</p> + <br>a much nicer API to Headers.</p> <p>Since Headers can be sent in requests, or received in responses, and have various limitations about what information can and should be mutable, <code>Headers</code> objects have a <strong>guard</strong> property. This is not exposed to the Web, but it affects which mutation operations are allowed on the Headers object. - <br></br>Possible values are:</p> - <ul><li>“none”: default.</li> + <br>Possible values are:</p> + <ul> + <li>“none”: default.</li> <li>“request”: guard for a Headers object obtained from a Request (<code>Request.headers</code>).</li> <li>“request-no-cors”: guard for a Headers object obtained from a Request created - <br></br>with mode “no-cors”.</li> + <br>with mode “no-cors”.</li> <li>“response”: naturally, for Headers obtained from Response (<code>Response.headers</code>).</li> <li>“immutable”: Mostly used for ServiceWorkers, renders a Headers object - <br></br>read-only.</li> - </ul><p>The details of how each guard affects the behaviors of the Headers object + <br>read-only.</li> + </ul> + <p>The details of how each guard affects the behaviors of the Headers object are - <br></br>in the <a href="https://fetch.spec.whatwg.org">specification</a>. For example, + <br>in the <a href="https://fetch.spec.whatwg.org">specification</a>. For example, you may not append or set a “request” guarded Headers’ “Content-Length” header. Similarly, inserting “Set-Cookie” into a Response header is not allowed so that ServiceWorkers may not set cookies via synthesized Responses.</p> <p>All of the Headers methods throw TypeError if <code>name</code> is not a <a href="https://fetch.spec.whatwg.org/#concept-header-name">valid HTTP Header name</a>. The mutation operations will throw TypeError if there is an immutable guard. Otherwise they fail silently. For example:</p> - <div> - <div><pre><span>var</span> res <span>=</span> Response.<span>error</span><span>(</span><span>)</span><span>;</span> + <div><pre><span>var</span> res <span>=</span> Response.<span>error</span><span>(</span><span>)</span><span>;</span> <span>try</span> <span>{</span> res.<span>headers</span>.<span>set</span><span>(</span><span>"Origin"</span><span>,</span> <span>"http://mybank.com"</span><span>)</span><span>;</span> <span>}</span> <span>catch</span><span>(</span>e<span>)</span> <span>{</span> console.<span>log</span><span>(</span><span>"Cannot pretend to be a bank!"</span><span>)</span><span>;</span> <span>}</span></pre> - </div></div> + </div> <h2>Request</h2> @@ -146,34 +148,31 @@ console.<span>log</span><span>(</span>reqHeaders.<span>getAll</span><span>(</spa a body, a request mode, credentials and cache hints.</p> <p>The simplest Request is of course, just a URL, as you may do to GET a resource.</p> - <div> - <div><pre><span>var</span> req <span>=</span> <span>new</span> Request<span>(</span><span>"/index.html"</span><span>)</span><span>;</span> + <div><pre><span>var</span> req <span>=</span> <span>new</span> Request<span>(</span><span>"/index.html"</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>req.<span>method</span><span>)</span><span>;</span> <span>// "GET"</span> console.<span>log</span><span>(</span>req.<span>url</span><span>)</span><span>;</span> <span>// "http://example.com/index.html"</span></pre> - </div></div> + </div> <p>You may also pass a Request to the <code>Request()</code> constructor to create a copy. - <br></br>(This is not the same as calling the <code>clone()</code> method, which + <br>(This is not the same as calling the <code>clone()</code> method, which is covered in - <br></br>the “Reading bodies” section.).</p> - <div> - <div><pre><span>var</span> copy <span>=</span> <span>new</span> Request<span>(</span>req<span>)</span><span>;</span> + <br>the “Reading bodies” section.).</p> + <div><pre><span>var</span> copy <span>=</span> <span>new</span> Request<span>(</span>req<span>)</span><span>;</span> console.<span>log</span><span>(</span>copy.<span>method</span><span>)</span><span>;</span> <span>// "GET"</span> console.<span>log</span><span>(</span>copy.<span>url</span><span>)</span><span>;</span> <span>// "http://example.com/index.html"</span></pre> - </div></div> + </div> <p>Again, this form is probably only useful in ServiceWorkers.</p> <p>The non-URL attributes of the <code>Request</code> can only be set by passing initial - <br></br>values as a second argument to the constructor. This argument is a dictionary.</p> - <div> - <div><pre><span>var</span> uploadReq <span>=</span> <span>new</span> Request<span>(</span><span>"/uploadImage"</span><span>,</span> <span>{</span> + <br>values as a second argument to the constructor. This argument is a dictionary.</p> + <div><pre><span>var</span> uploadReq <span>=</span> <span>new</span> Request<span>(</span><span>"/uploadImage"</span><span>,</span> <span>{</span> method<span>:</span> <span>"POST"</span><span>,</span> headers<span>:</span> <span>{</span> <span>"Content-Type"</span><span>:</span> <span>"image/png"</span><span>,</span> <span>}</span><span>,</span> body<span>:</span> <span>"image data"</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>The Request’s mode is used to determine if cross-origin requests lead to valid responses, and which properties on the response are readable. Legal mode values are <code>"same-origin"</code>, <code>"no-cors"</code> (default) @@ -181,15 +180,14 @@ console.<span>log</span><span>(</span>copy.<span>url</span><span>)</span><span>; <p>The <code>"same-origin"</code> mode is simple, if a request is made to another origin with this mode set, the result is simply an error. You could use this to ensure that - <br></br>a request is always being made to your origin.</p> - <div> - <div><pre><span>var</span> arbitraryUrl <span>=</span> document.<span>getElementById</span><span>(</span><span>"url-input"</span><span>)</span>.<span>value</span><span>;</span> + <br>a request is always being made to your origin.</p> + <div><pre><span>var</span> arbitraryUrl <span>=</span> document.<span>getElementById</span><span>(</span><span>"url-input"</span><span>)</span>.<span>value</span><span>;</span> fetch<span>(</span>arbitraryUrl<span>,</span> <span>{</span> mode<span>:</span> <span>"same-origin"</span> <span>}</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>res<span>)</span> <span>{</span> console.<span>log</span><span>(</span><span>"Response succeeded?"</span><span>,</span> res.<span>ok</span><span>)</span><span>;</span> <span>}</span><span>,</span> <span>function</span><span>(</span>e<span>)</span> <span>{</span> console.<span>log</span><span>(</span><span>"Please enter a same-origin URL!"</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>The <code>"no-cors"</code> mode captures what the web platform does by default for scripts you import from CDNs, images hosted on other domains, and so on. First, it prevents the method from being anything other than “HEAD”, @@ -202,20 +200,19 @@ fetch<span>(</span>arbitraryUrl<span>,</span> <span>{</span> mode<span>:</span> <p><code>"cors"</code> mode is what you’ll usually use to make known cross-origin requests to access various APIs offered by other vendors. These are expected to adhere to - <br></br>the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS">CORS protocol</a>. + <br>the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS">CORS protocol</a>. Only a <a href="https://fetch.spec.whatwg.org/#concept-filtered-response-cors">limited set</a> of headers is exposed in the Response, but the body is readable. For example, you could get a list of Flickr’s <a href="https://www.flickr.com/services/api/flickr.interestingness.getList.html">most interesting</a> photos today like this:</p> - <div> - <div><pre><span>var</span> u <span>=</span> <span>new</span> URLSearchParams<span>(</span><span>)</span><span>;</span> + <div><pre><span>var</span> u <span>=</span> <span>new</span> URLSearchParams<span>(</span><span>)</span><span>;</span> u.<span>append</span><span>(</span><span>'method'</span><span>,</span> <span>'flickr.interestingness.getList'</span><span>)</span><span>;</span> u.<span>append</span><span>(</span><span>'api_key'</span><span>,</span> <span>'<insert api key here>'</span><span>)</span><span>;</span> u.<span>append</span><span>(</span><span>'format'</span><span>,</span> <span>'json'</span><span>)</span><span>;</span> u.<span>append</span><span>(</span><span>'nojsoncallback'</span><span>,</span> <span>'1'</span><span>)</span><span>;</span> - + <span>var</span> apiCall <span>=</span> fetch<span>(</span><span>'https://api.flickr.com/services/rest?'</span> <span>+</span> u<span>)</span><span>;</span> - + apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>response<span>)</span> <span>{</span> <span>return</span> response.<span>json</span><span>(</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>json<span>)</span> <span>{</span> <span>// photo is a list of photos.</span> @@ -226,25 +223,26 @@ apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>respon console.<span>log</span><span>(</span>photo.<span>title</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>You may not read out the “Date” header since Flickr does not allow it via - <br></br><code>Access-Control-Expose-Headers</code>.</p> - <div> - <div><pre>response.<span>headers</span>.<span>get</span><span>(</span><span>"Date"</span><span>)</span><span>;</span> <span>// null</span></pre> - </div></div> + <br> +<code>Access-Control-Expose-Headers</code>.</p> + <div><pre>response.<span>headers</span>.<span>get</span><span>(</span><span>"Date"</span><span>)</span><span>;</span> <span>// null</span></pre> + </div> <p>The <code>credentials</code> enumeration determines if cookies for the other domain are - <br></br>sent to cross-origin requests. This is similar to XHR’s <code>withCredentials</code> - <br></br>flag, but tri-valued as <code>"omit"</code> (default), <code>"same-origin"</code> and <code>"include"</code>.</p> + <br>sent to cross-origin requests. This is similar to XHR’s <code>withCredentials</code> + <br>flag, but tri-valued as <code>"omit"</code> (default), <code>"same-origin"</code> and <code>"include"</code>.</p> <p>The Request object will also give the ability to offer caching hints to the user-agent. This is currently undergoing some <a href="https://github.com/slightlyoff/ServiceWorker/issues/585">security review</a>. Firefox exposes the attribute, but it has no effect.</p> <p>Requests have two read-only attributes that are relevant to ServiceWorkers - <br></br>intercepting them. There is the string <code>referrer</code>, which is + <br>intercepting them. There is the string <code>referrer</code>, which is set by the UA to be - <br></br>the referrer of the Request. This may be an empty string. The other is - <br></br><code>context</code> which is a rather <a href="https://fetch.spec.whatwg.org/#requestcredentials">large enumeration</a> defining + <br>the referrer of the Request. This may be an empty string. The other is + <br> +<code>context</code> which is a rather <a href="https://fetch.spec.whatwg.org/#requestcredentials">large enumeration</a> defining what sort of resource is being fetched. This could be “image” if the request is from an <img>tag in the controlled document, “worker” if it is an attempt to load a @@ -265,39 +263,40 @@ apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>respon The <code>url</code> attribute reflects the URL of the corresponding request.</p> <p>Response also has a <code>type</code>, which is “basic”, “cors”, “default”, “error” or - <br></br>“opaque”.</p> - <ul><li><code>"basic"</code>: normal, same origin response, with all headers exposed + <br>“opaque”.</p> + <ul> + <li><code>"basic"</code>: normal, same origin response, with all headers exposed except - <br></br>“Set-Cookie” and “Set-Cookie2″.</li> + <br>“Set-Cookie” and “Set-Cookie2″.</li> <li><code>"cors"</code>: response was received from a valid cross-origin request. <a href="https://fetch.spec.whatwg.org/#concept-filtered-response-cors">Certain headers and the body</a>may be accessed.</li> <li><code>"error"</code>: network error. No useful information describing the error is available. The Response’s status is 0, headers are empty and immutable. This is the type for a Response obtained from <code>Response.error()</code>.</li> <li><code>"opaque"</code>: response for “no-cors” request to cross-origin - resource. <a href="https://fetch.spec.whatwg.org/#concept-filtered-response-opaque">Severely<br></br> + resource. <a href="https://fetch.spec.whatwg.org/#concept-filtered-response-opaque">Severely<br> restricted</a> </li> - </ul><p>The “error” type results in the <code>fetch()</code> Promise rejecting with + </ul> + <p>The “error” type results in the <code>fetch()</code> Promise rejecting with TypeError.</p> <p>There are certain attributes that are useful only in a ServiceWorker scope. The - <br></br>idiomatic way to return a Response to an intercepted request in ServiceWorkers + <br>idiomatic way to return a Response to an intercepted request in ServiceWorkers is:</p> - <div> - <div><pre>addEventListener<span>(</span><span>'fetch'</span><span>,</span> <span>function</span><span>(</span>event<span>)</span> <span>{</span> + <div><pre>addEventListener<span>(</span><span>'fetch'</span><span>,</span> <span>function</span><span>(</span>event<span>)</span> <span>{</span> event.<span>respondWith</span><span>(</span><span>new</span> Response<span>(</span><span>"Response body"</span><span>,</span> <span>{</span> headers<span>:</span> <span>{</span> <span>"Content-Type"</span> <span>:</span> <span>"text/plain"</span> <span>}</span> <span>}</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>As you can see, Response has a two argument constructor, where both arguments are optional. The first argument is a body initializer, and the second is a dictionary to set the <code>status</code>, <code>statusText</code> and <code>headers</code>.</p> <p>The static method <code>Response.error()</code> simply returns an error response. Similarly, <code>Response.redirect(url, status)</code> returns a Response resulting in - <br></br>a redirect to <code>url</code>.</p> + <br>a redirect to <code>url</code>.</p> <h2>Dealing with bodies</h2> @@ -305,7 +304,8 @@ apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>respon over it because of the various data types body may contain, but we will cover it in detail now.</p> <p>A body is an instance of any of the following types.</p> - <ul><li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</a> + <ul> + <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</a> </li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView">ArrayBufferView</a> (Uint8Array and friends)</li> @@ -318,10 +318,12 @@ apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>respon <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/FormData">FormData</a> – currently not supported by either Gecko or Blink. Firefox expects to ship this in version 39 along with the rest of Fetch.</li> - </ul><p>In addition, Request and Response both offer the following methods to + </ul> + <p>In addition, Request and Response both offer the following methods to extract their body. These all return a Promise that is eventually resolved with the actual content.</p> - <ul><li><code>arrayBuffer()</code> + <ul> + <li><code>arrayBuffer()</code> </li> <li><code>blob()</code> </li> @@ -331,21 +333,20 @@ apiCall.<span>then</span><span>(</span><span>function</span><span>(</span>respon </li> <li><code>formData()</code> </li> - </ul><p>This is a significant improvement over XHR in terms of ease of use of + </ul> + <p>This is a significant improvement over XHR in terms of ease of use of non-text data!</p> <p>Request bodies can be set by passing <code>body</code> parameters:</p> - <div> - <div><pre><span>var</span> form <span>=</span> <span>new</span> FormData<span>(</span>document.<span>getElementById</span><span>(</span><span>'login-form'</span><span>)</span><span>)</span><span>;</span> + <div><pre><span>var</span> form <span>=</span> <span>new</span> FormData<span>(</span>document.<span>getElementById</span><span>(</span><span>'login-form'</span><span>)</span><span>)</span><span>;</span> fetch<span>(</span><span>"/login"</span><span>,</span> <span>{</span> method<span>:</span> <span>"POST"</span><span>,</span> body<span>:</span> form <span>}</span><span>)</span></pre> - </div></div> + </div> <p>Responses take the first argument as the body.</p> - <div> - <div><pre><span>var</span> res <span>=</span> <span>new</span> Response<span>(</span><span>new</span> File<span>(</span><span>[</span><span>"chunk"</span><span>,</span> <span>"chunk"</span><span>]</span><span>,</span> <span>"archive.zip"</span><span>,</span> + <div><pre><span>var</span> res <span>=</span> <span>new</span> Response<span>(</span><span>new</span> File<span>(</span><span>[</span><span>"chunk"</span><span>,</span> <span>"chunk"</span><span>]</span><span>,</span> <span>"archive.zip"</span><span>,</span> <span>{</span> type<span>:</span> <span>"application/zip"</span> <span>}</span><span>)</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>Both Request and Response (and by extension the <code>fetch()</code> function), will try to intelligently <a href="https://fetch.spec.whatwg.org/#concept-bodyinit-extract">determine the content type</a>. Request will also automatically set a “Content-Type” header if none is @@ -356,18 +357,17 @@ fetch<span>(</span><span>"/login"</span><span>,</span> <span>{</span> <p>It is important to realise that Request and Response bodies can only be read once! Both interfaces have a boolean attribute <code>bodyUsed</code> to determine if it is safe to read or not.</p> - <div> - <div><pre><span>var</span> res <span>=</span> <span>new</span> Response<span>(</span><span>"one time use"</span><span>)</span><span>;</span> + <div><pre><span>var</span> res <span>=</span> <span>new</span> Response<span>(</span><span>"one time use"</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>res.<span>bodyUsed</span><span>)</span><span>;</span> <span>// false</span> res.<span>text</span><span>(</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>v<span>)</span> <span>{</span> console.<span>log</span><span>(</span>res.<span>bodyUsed</span><span>)</span><span>;</span> <span>// true</span> <span>}</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>res.<span>bodyUsed</span><span>)</span><span>;</span> <span>// true</span> - + res.<span>text</span><span>(</span><span>)</span>.<span>catch</span><span>(</span><span>function</span><span>(</span>e<span>)</span> <span>{</span> console.<span>log</span><span>(</span><span>"Tried to read already consumed Response"</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <p>This decision allows easing the transition to an eventual <a href="https://streams.spec.whatwg.org/">stream-based</a> Fetch API. The intention is to let applications consume data as it arrives, allowing for JavaScript to deal with larger files like videos, and perform things @@ -381,22 +381,21 @@ res.<span>text</span><span>(</span><span>)</span>.<span>catch</span><span>(</spa will return a clone of the object, with a ‘new’ body. <code>clone()</code> MUST be called before the body of the corresponding object has been used. That is, <code>clone()</code> first, read later.</p> - <div> - <div><pre>addEventListener<span>(</span><span>'fetch'</span><span>,</span> <span>function</span><span>(</span>evt<span>)</span> <span>{</span> + <div><pre>addEventListener<span>(</span><span>'fetch'</span><span>,</span> <span>function</span><span>(</span>evt<span>)</span> <span>{</span> <span>var</span> sheep <span>=</span> <span>new</span> Response<span>(</span><span>"Dolly"</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>sheep.<span>bodyUsed</span><span>)</span><span>;</span> <span>// false</span> <span>var</span> clone <span>=</span> sheep.<span>clone</span><span>(</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>clone.<span>bodyUsed</span><span>)</span><span>;</span> <span>// false</span> - + clone.<span>text</span><span>(</span><span>)</span><span>;</span> console.<span>log</span><span>(</span>sheep.<span>bodyUsed</span><span>)</span><span>;</span> <span>// false</span> console.<span>log</span><span>(</span>clone.<span>bodyUsed</span><span>)</span><span>;</span> <span>// true</span> - + evt.<span>respondWith</span><span>(</span>cache.<span>add</span><span>(</span>sheep.<span>clone</span><span>(</span><span>)</span><span>)</span>.<span>then</span><span>(</span><span>function</span><span>(</span>e<span>)</span> <span>{</span> <span>return</span> sheep<span>;</span> <span>}</span><span>)</span><span>;</span> <span>}</span><span>)</span><span>;</span></pre> - </div></div> + </div> <h2>Future improvements</h2> @@ -409,7 +408,11 @@ res.<span>text</span><span>(</span><span>)</span>.<span>catch</span><span>(</spa in the issues in the <a href="https://www.w3.org/Bugs/Public/buglist.cgi?product=WHATWG&component=Fetch&resolution=---">Fetch</a> and <a href="https://github.com/slightlyoff/ServiceWorker/issues">ServiceWorker</a>specifications.</p> <p>For a better web!</p> - <p><em>The author would like to thank Andrea Marchesini, Anne van Kesteren and Ben<br></br> + <p><em>The author would like to thank Andrea Marchesini, Anne van Kesteren and Ben<br> Kelly for helping with the specification and implementation.</em> </p> - </article></div>
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