blocks|key|773949|text|在原生JavaScript中没有可用的东西。你可以使用像Murmurhash这样的东西。这里有一个JavaScript实现：https://github.com/garycourt/murmurhash-js。我没有用过它，所以不能保证它。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|773950|更新:现在JavaScript中有多个可用的Murmurhash3实现。但是，它们中的许多都存在将字符串编码为字节的问题，并且与参考C%2B%2B实现相比可能会产生不同的结果。您可以使用read+an+analysis+on+this+here，murmurhash3js-revisited库实现了该函数的所有三个变体，并且符合参考。|773951|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/MurmurHash|1|https://github.com/garycourt/murmurhash-js|2|https://cimi.io/murmurhash3js-revisited/|3|https://github.com/cimi/murmurhash3js-revisited^0|S|A|0|1Q|16|1|0|2H|T|2|3B|N|3|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]|$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]|$A|14|B|15|1|16]]|C|$]]|$1|F|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]|R|$5|I|J|K|C|$L|S]]]]

Nothing is available in native JavaScript. You could use something like <a href="http://en.wikipedia.org/wiki/MurmurHash" rel="nofollow noreferrer">Murmurhash</a>. There's a JavaScript implementation here: <a href="https://github.com/garycourt/murmurhash-js" rel="nofollow noreferrer">https://github.com/garycourt/murmurhash-js</a>. I haven't used it though so can't vouch for it.

Update: now there are multiple Murmurhash3 implementations available in JavaScript. However, many of them have problems encoding strings to bytes and can produce different results compared to the reference C++ implementation. You can <a href="https://cimi.io/murmurhash3js-revisited/" rel="nofollow noreferrer">read an analysis on this here</a>, the <a href="https://github.com/cimi/murmurhash3js-revisited" rel="nofollow noreferrer">murmurhash3js-revisited</a> library implements all three variants of the function and conforms to the reference.

blocks|key|989233|text|在未来，这可能通过目前正在试验的Web+Crypto+API来实现|type|unstyled|depth|inlineStyleRanges|entityRanges|data|989234|https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API|offset|length|989235|https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto|989236|诚然，在撰写本文时，在生产环境中使用它是不现实的，并且可能是一个移动的目标。然而，未来5年谁知道呢？|989237|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|1R|0|0|0|1P|1|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|C]]|Q|$5|M|N|O|A|$P|G]]]]

Over the horizon, this may be possible with the currently experimental Web Crypto API

<a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API" rel="nofollow">https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API</a>

<a href="https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto" rel="nofollow">https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto</a>

Granted, at the time of this writing it is unrealistic to use in a production environment and will likely be a moving target. However, come 5 years who knows?

blocks|key|989277|text|在2020年，有一个原生API：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|989278|SubtleCrypto.digest()|offset|length|style|CODE|989279|https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest|989280|示例：|989281|crypto.subtle
++.digest("SHA-256",+new+TextEncoder().encode("hello"))
++.then(console.log);|code-block|syntax|javascript|989282|十六进制字符串转换：|989283|​|989284|const+digest+=+async+({+algorithm+=+"SHA-256",+message+})+=>
++Array.prototype.map
++++.call(
++++++new+Uint8Array(
++++++++await+crypto.subtle.digest(algorithm,+new+TextEncoder().encode(message))
++++++),
++++++(x)+=>+("0"+%2B+x.toString(16)).slice(-2)
++++)
++++.join("");

digest({message:+"hello"}).then(console.log)|989285|989286|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|L|0|0|1W|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@$D|16|E|17|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|J|3|K|5|6|7|1C|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1D|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1E|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1F|8|@]|9|@]|A|$]]|$1|U|3|V|5|N|7|1G|8|@]|9|@]|A|$O|P]]|$1|W|3|T|5|6|7|1H|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|Y|$Z|$5|10|11|12|A|$13|I]]]]

In 2020, there is a native API:
<code>SubtleCrypto.digest()</code>
<a href="https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest" rel="noreferrer">https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest</a>
example:
<pre class="lang-js prettyprint-override"><code>crypto.subtle
 .digest(&quot;SHA-256&quot;, new TextEncoder().encode(&quot;hello&quot;))
 .then(console.log);
</code></pre>
hex string conversion:
<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const digest = async ({ algorithm = "SHA-256", message }) =&gt;
 Array.prototype.map
 .call(
 new Uint8Array(
 await crypto.subtle.digest(algorithm, new TextEncoder().encode(message))
 ),
 (x) =&gt; ("0" + x.toString(16)).slice(-2)
 )
 .join("");

digest({message: "hello"}).then(console.log)</code></pre>
</div>
</div>

I'd like to be able to create unique tokens* for users based on a hashed string. I know I could, for example, use a md5() library but as the purpose is not cryptographic I was wondering if there was anything I could use "out of the box." Are there any one-way hashing functions available in native JavaScript?

*I realize these won't be strictly unique. I'm ok with a small chance of hashing collision.

Are there any one-way hashing functions available in native JavaScript?

我希望能够基于散列字符串为用户创建唯一的令牌*。例如，我知道我可以使用md5()库，但因为它的目的不是加密，所以我想知道是否有什么东西可以“开箱即用”。在原生JavaScript中是否有可用的单向散列函数？*我意识到这些并不是严格意义上的独一无二。我认为哈希冲突的可能性很小。

问在原生JavaScript中是否有可用的单向散列函数？
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