blocks|key|89712|text|如果您想要更复杂的格式化。你可以看看http://numeraljs.com/#format|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|89713|​|89714|📷|atomic|89715|89716|entityMap|0|LINK|mutability|MUTABLE|url|http://numeraljs.com/#format|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/a6ea390eb45406dd7d4ca1ce8aa09670.png|imageAlt^0|I|S|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|I|3|E|5|6|7|16|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|S|N|T|C|$U|V|W|-4]]]]

<p>If you want more complex formatting. You can have a look at <a href="http://numeraljs.com/#format" rel="nofollow noreferrer">http://numeraljs.com/#format</a></p>

<p><a href="https://i.stack.imgur.com/3pvol.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3pvol.png" alt="enter image description here"></a></p>


blocks|key|654392|text|它支持按字符串格式格式化数字吗？|type|blockquote|depth|inlineStyleRanges|entityRanges|data|654393|我们没有内置的对格式数字的支持，但我们几乎没有什么选项可以获得所需的#,##0.00格式，例如：|unstyled|offset|length|style|CODE|654394|使用.toLocaleString()的|654395|​|BOLD|654396|const+num+=+1234567.8933

//+To+get+only+two+decimal+places+use+maximumFractionDigits+option
const+options+=+{minimumFractionDigits:+2,+maximumFractionDigits:+2}
const+res+=+num.toLocaleString(undefined,+options)
console.log(res)+++//=>+1,234,567.89|code-block|syntax|javascript|654397|654398|使用Intl.NumberFormat的|654399|654400|const+num+=+1234567.8933

//+To+get+only+two+decimal+places+use+maximumFractionDigits+option
const+options+=+{minimumFractionDigits:+2,+maximumFractionDigits:+2}
const+res+=+new+Intl.NumberFormat(undefined,+options).format(num)
console.log(res)+++//=>+1,234,567.89|654401|654402|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString|1|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat^0|0|Y|8|0|2|H|0|0|0|1|0|0|0|1|0|0|K|2|H|1|0|0|1|0|0|0|1|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1A|8|@$E|1B|F|1C|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|1D|8|@]|9|@$E|1E|F|1F|1|1G]]|A|$]]|$1|K|3|L|5|D|7|1H|8|@$E|1I|F|1J|G|M]]|9|@]|A|$]]|$1|N|3|O|5|P|7|1K|8|@]|9|@]|A|$Q|R]]|$1|S|3|L|5|D|7|1L|8|@$E|1M|F|1N|G|M]]|9|@]|A|$]]|$1|T|3|U|5|D|7|1O|8|@$E|1P|F|1Q|G|M]]|9|@$E|1R|F|1S|1|1T]]|A|$]]|$1|V|3|L|5|D|7|1U|8|@$E|1V|F|1W|G|M]]|9|@]|A|$]]|$1|W|3|X|5|P|7|1X|8|@]|9|@]|A|$Q|R]]|$1|Y|3|L|5|D|7|1Y|8|@$E|1Z|F|20|G|M]]|9|@]|A|$]]|$1|Z|3|-4|5|D|7|21|8|@]|9|@]|A|$]]]|10|$11|$5|12|13|14|A|$15|16]]|17|$5|12|13|14|A|$15|18]]]]

<blockquote>
  <p>Does it support formatting numbers by string format?</p>
</blockquote>

<p>We don't have built-in support to format numbers, but we have few options to get desired <code>#,##0.00</code> format like:</p>

<p><strong>Using <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString" rel="nofollow noreferrer"><code>.toLocaleString()</code></a>:</strong></p>

<p><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 num = 1234567.8933

// To get only two decimal places use maximumFractionDigits option
const options = {minimumFractionDigits: 2, maximumFractionDigits: 2}
const res = num.toLocaleString(undefined, options)
console.log(res)   //=&gt; 1,234,567.89</code></pre>
</div>
</div>
</p>

<p><strong>Using <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat" rel="nofollow noreferrer"><code>Intl.NumberFormat</code></a>:</strong></p>

<p><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 num = 1234567.8933

// To get only two decimal places use maximumFractionDigits option
const options = {minimumFractionDigits: 2, maximumFractionDigits: 2}
const res = new Intl.NumberFormat(undefined, options).format(num)
console.log(res)   //=&gt; 1,234,567.89</code></pre>
</div>
</div>
</p>


blocks|key|654560|text|正如评论中提到的那样，如果不开箱即用，也许numeral.js会有所帮助：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|654561|​|654562|var+num+=+numeral(1234567.8933).format('0,0,0.00');
console.log(num)|code-block|syntax|javascript|654563|<script+src="//cdnjs.cloudflare.com/ajax/libs/numeral.js/2.0.6/numeral.min.js"></script>|654564|654565|entityMap|0|LINK|mutability|MUTABLE|url|http://numeraljs.com/#format^0|L|A|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|10|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|M|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]]]

<p>As mentioned in the comments, not out of the box maybe <a href="http://numeraljs.com/#format" rel="nofollow noreferrer">numeral.js</a> would help:</p>

<p><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>var num = numeral(1234567.8933).format('0,0,0.00');
console.log(num)</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="//cdnjs.cloudflare.com/ajax/libs/numeral.js/2.0.6/numeral.min.js"&gt;&lt;/script&gt;</code></pre>
</div>
</div>
</p>


blocks|key|654426|text|您可以使用Intl.NumberFormat|type|unstyled|depth|inlineStyleRanges|entityRanges|data|654427|​|654428|let+num+=+1234567.8933

let+value+=+new+Intl.NumberFormat('en-US',+{maximumFractionDigits:+2}).format(num);

console.log(value)|code-block|syntax|javascript|654429|654430|Intl.NumberFormat|offset|length|style|CODE|654431|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat^0|0|0|0|0|0|H|0|H|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@$L|12|M|13|N|O]]|9|@$L|14|M|15|1|16]]|A|$]]|$1|P|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]]]

<p>You can use Intl.NumberFormat</p>

<p><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>let num = 1234567.8933

let value = new Intl.NumberFormat('en-US', {maximumFractionDigits: 2}).format(num);

console.log(value)</code></pre>
</div>
</div>
</p>

<p><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat" rel="nofollow noreferrer"><code>Intl.NumberFormat</code></a></p>


blocks|key|654450|text|您可以使用正则表达式格式化：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|654451|function+numberWithCommas(x)+{
++++return+x.toString().replace(/\B(?=(\d{3})%2B(?!\d))/g,+",");
}|code-block|syntax|javascript|654452|根据需要更改表达式。它解决了动态格式化问题。|654453|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>You can use a regular expression to format :</p>

<pre><code>function numberWithCommas(x) {
    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
</code></pre>

<p>Change expression as you required. It addresses the dynamic formatting issue.</p>


blocks|key|89724|text|这里修正了小数点后的2位数字，并使用toLocaleString()|type|unstyled|depth|inlineStyleRanges|entityRanges|data|89725|​|89726|let+num+=+1234567.8333
console.log(parseFloat(num.toFixed(2)).toLocaleString())|code-block|syntax|javascript|89727|89728|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

<p>Here fixed upto 2 digit after decimal and use toLocaleString()</p>

<p><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>let num = 1234567.8333
console.log(parseFloat(num.toFixed(2)).toLocaleString())</code></pre>
</div>
</div>
</p>


<p>In .NET I can format number by this code:</p>

<pre><code>Dim num = 1234567.8933
Dim res = num.ToString("#,##0.00")
</code></pre>

<p>Result: <code>res= 1,234,567.89</code></p>

<p>I want using this format <code>"#,##0.00"</code> in JavaScript. Does it support formatting numbers by string format?</p>


Does JavaScript support formatting numbers by string format?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在.NET中，我可以用以下代码格式化数字：Dim num = 1234567.8933Dim res = num.ToString("#,##0.00")结果：res= 1,234,567.89我希望在"#,##0.00"中使用这种格式的JavaScript。它支持按字符串格式格式化数字吗？

问JavaScript是否支持按字符串格式格式化数字？
EN

回答 6

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问JavaScript是否支持按字符串格式格式化数字？
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