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| <div class="content clearfix"><h1>io.js 运行 ES6</h1> | ||
| <p>io.js 是基于 <a href="https://code.google.com/p/v8/">V8</a> 引擎的较新版本构建的。通过持续跟进最新版的 V8 引擎，我们可以保证及时地为开发者带来最新的 <a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">JavaScript ECMA-262 规范</a> 中的语言特性，同时也能得到性能和稳定性的提升。</p> | ||
| <p>io.js 1.4.2 集成了 V8 4.1.0.21 版本，其中包含的 ES6 特性远超 joyent/[email protected] 集成的 3.26.33 版本所包含的。</p> | ||
| <p>io.js 1.4.3 集成了 V8 4.1.0.21 版本，其中包含的 ES6 特性远超 joyent/[email protected] 集成的 3.26.33 版本所包含的。</p> | ||
| <h2>干掉 --harmony</h2> | ||
| <p>在 joyent/[email protected] (V8 3.26) 版本中，<code>--harmony</code> 运行时参数会一并开启所有 <strong>已完成</strong>，<strong>待完成</strong> 和 <strong>修订中</strong> 的 ES6 的一大堆特性 (除了 <code>typeof</code> 的非标准/不确定的特性需要通过 <code>--harmony-typeof</code> 开启之外)。这就意味着一些真正鸡肋甚至废弃的特性，譬如 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy">proxies</a> 都会像 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*">generators</a> 那样开放给开发者，它们很偏门，甚至缺少相关资料。因此，最好的做法是，要么通过加特定参数(例如 <code>--harmony-generators</code>) 开启稳定的特性，要么直接开启全部但严格地使用特定部分特性。</p> | ||
| <p>使用 [email protected] (V8 4.1+)，妈妈再也不担心我了。所有的特性在逻辑上被分为 <strong>已完成</strong>，<strong>待完成</strong> 和 <strong>修订中</strong> 三部分：</p> | ||
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@@ -136,11 +136,11 @@ <h2>如何查阅某一版本的 io.js 所集成的 V8 的版本？</h2> | |
| <!-- | ||
| =========== BUILD INFORMATION =========== | ||
| Build Time: 2015-03-01 00:47:46 UTC | ||
| Build Time: 2015-03-01 00:59:13 UTC | ||
| Commit Sha: e00b7f5270dc4ea17df8c6a6dccdd124244b2fff | ||
| Commit Msg: Fixes to the order for when handlebars should execute on markdown | ||
| Hashsum: 83b91f97b2f161c4b80e9cba3e9cf8d83cbcccbb | ||
| Commit Sha: 94d6715bb4c3660b4177c84ad0c8234e8e5ac00d | ||
| Commit Msg: Generated public/ with latest version (1.4.2) | ||
| Hashsum: eb2b33d6d6bd1e1a91d2c6037af5fe610dbf3b8c | ||
| =========== END BUILD INFORMATION =========== | ||
| --> | ||
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| Original file line number | Diff line number | Diff line change |
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| <div class="content clearfix"><h1>ES6 on io.js</h1> | ||
| <p>io.js is built against modern versions of <a href="https://code.google.com/p/v8/">V8</a>. By keeping up-to-date with the latest releases of this engine we ensure new features from the <a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">JavaScript ECMA-262 specification</a> are brought to io.js developers in a timely manner, as well as continued performance and stability improvements.</p> | ||
| <p>Version 1.4.2 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <p>Version 1.4.3 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <h2>No more --harmony flag</h2> | ||
| <p>On joyent/[email protected] (V8 3.26), the <code>--harmony</code> runtime flag enabled all <strong>completed</strong>, <strong>staged</strong> and <strong>in progress</strong> ES6 features together, in bulk (with the exception of nonstandard/non-harmonious semantics for <code>typeof</code> which were hidden under <code>--harmony-typeof</code>). This meant that some really buggy or even broken features like <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy">proxies</a> were just as readily available for developers as <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*">generators</a>, which had very little or even no known-issues. As such, it was best practice to either enable only certain features by using specific runtime harmony feature flags (e.g. <code>--harmony-generators</code>), or simply enable all of them and then use a restricted subset.</p> | ||
| <p>With [email protected] (V8 4.1+), all that complexity goes away. All harmony features are now logically split into three groups for <strong>shipping</strong>, <strong>staged</strong> and <strong>in progress</strong> features:</p> | ||
|
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@@ -136,11 +136,11 @@ <h2>How do I find which version of V8 ships with a particular version of io.js?< | |
| <!-- | ||
| =========== BUILD INFORMATION =========== | ||
| Build Time: 2015-03-01 00:47:46 UTC | ||
| Build Time: 2015-03-01 00:59:13 UTC | ||
| Commit Sha: e00b7f5270dc4ea17df8c6a6dccdd124244b2fff | ||
| Commit Msg: Fixes to the order for when handlebars should execute on markdown | ||
| Hashsum: 6948ad511e9fd56b306edffbbb6c6d07f651e31f | ||
| Commit Sha: 94d6715bb4c3660b4177c84ad0c8234e8e5ac00d | ||
| Commit Msg: Generated public/ with latest version (1.4.2) | ||
| Hashsum: 06df43c27dbdb481d58f78ce82cf765eb7943bcd | ||
| =========== END BUILD INFORMATION =========== | ||
| --> | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -34,7 +34,7 @@ | |
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| <div class="content clearfix"><h1>ES6 on io.js</h1> | ||
| <p>io.js is built against modern versions of <a href="https://code.google.com/p/v8/">V8</a>. By keeping up-to-date with the latest releases of this engine we ensure new features from the <a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">JavaScript ECMA-262 specification</a> are brought to io.js developers in a timely manner, as well as continued performance and stability improvements.</p> | ||
| <p>Version 1.4.2 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <p>Version 1.4.3 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <h2>No more --harmony flag</h2> | ||
| <p>On joyent/[email protected] (V8 3.26), the <code>--harmony</code> runtime flag enabled all <strong>completed</strong>, <strong>staged</strong> and <strong>in progress</strong> ES6 features together, in bulk (with the exception of nonstandard/non-harmonious semantics for <code>typeof</code> which were hidden under <code>--harmony-typeof</code>). This meant that some really buggy or even broken features like <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy">proxies</a> were just as readily available for developers as <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*">generators</a>, which had very little or even no known-issues. As such, it was best practice to either enable only certain features by using specific runtime harmony feature flags (e.g. <code>--harmony-generators</code>), or simply enable all of them and then use a restricted subset.</p> | ||
| <p>With [email protected] (V8 4.1+), all that complexity goes away. All harmony features are now logically split into three groups for <strong>shipping</strong>, <strong>staged</strong> and <strong>in progress</strong> features:</p> | ||
|
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@@ -136,11 +136,11 @@ <h2>How do I find which version of V8 ships with a particular version of io.js?< | |
| <!-- | ||
| =========== BUILD INFORMATION =========== | ||
| Build Time: 2015-03-01 00:47:46 UTC | ||
| Build Time: 2015-03-01 00:59:13 UTC | ||
| Commit Sha: e00b7f5270dc4ea17df8c6a6dccdd124244b2fff | ||
| Commit Msg: Fixes to the order for when handlebars should execute on markdown | ||
| Hashsum: 1c86f776229a964c85207bd88c1eab74a918b0da | ||
| Commit Sha: 94d6715bb4c3660b4177c84ad0c8234e8e5ac00d | ||
| Commit Msg: Generated public/ with latest version (1.4.2) | ||
| Hashsum: b6e28ffb11196e3a751f2a8f15c1cbb9836c3b82 | ||
| =========== END BUILD INFORMATION =========== | ||
| --> | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -34,7 +34,7 @@ | |
|
|
||
| <div class="content clearfix"><h1>ES6 on io.js</h1> | ||
| <p>io.js is built against modern versions of <a href="https://code.google.com/p/v8/">V8</a>. By keeping up-to-date with the latest releases of this engine we ensure new features from the <a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">JavaScript ECMA-262 specification</a> are brought to io.js developers in a timely manner, as well as continued performance and stability improvements.</p> | ||
| <p>Version 1.4.2 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <p>Version 1.4.3 of io.js ships with V8 4.1.0.21, which includes ES6 features well beyond version 3.26.33 that will be shipped with joyent/[email protected].</p> | ||
| <h2>No more --harmony flag</h2> | ||
| <p>On joyent/[email protected] (V8 3.26), the <code>--harmony</code> runtime flag enabled all <strong>completed</strong>, <strong>staged</strong> and <strong>in progress</strong> ES6 features together, in bulk (with the exception of nonstandard/non-harmonious semantics for <code>typeof</code> which were hidden under <code>--harmony-typeof</code>). This meant that some really buggy or even broken features like <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy">proxies</a> were just as readily available for developers as <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*">generators</a>, which had very little or even no known-issues. As such, it was best practice to either enable only certain features by using specific runtime harmony feature flags (e.g. <code>--harmony-generators</code>), or simply enable all of them and then use a restricted subset.</p> | ||
| <p>With [email protected] (V8 4.1+), all that complexity goes away. All harmony features are now logically split into three groups for <strong>shipping</strong>, <strong>staged</strong> and <strong>in progress</strong> features:</p> | ||
|
|
@@ -136,11 +136,11 @@ <h2>How do I find which version of V8 ships with a particular version of io.js?< | |
| <!-- | ||
| =========== BUILD INFORMATION =========== | ||
| Build Time: 2015-03-01 00:47:46 UTC | ||
| Build Time: 2015-03-01 00:59:13 UTC | ||
| Commit Sha: e00b7f5270dc4ea17df8c6a6dccdd124244b2fff | ||
| Commit Msg: Fixes to the order for when handlebars should execute on markdown | ||
| Hashsum: 354820e84f3c74ebf320914bb9d14f739e394b30 | ||
| Commit Sha: 94d6715bb4c3660b4177c84ad0c8234e8e5ac00d | ||
| Commit Msg: Generated public/ with latest version (1.4.2) | ||
| Hashsum: 0763a32cc8b4bce7c56c7ada10a695af09b20834 | ||
| =========== END BUILD INFORMATION =========== | ||
| --> | ||
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