js如何保留两位小数；toFixed()如何使用
的有关信息介绍如下：
toFixed() 方法可把 Number 型数据进行四舍五入为指定小数位数的数字。
toFixed()语法：NumberObject.toFixed(num)，num参数是 0 ~ 20 之间的整数是必须的参数，用于设置保存小数的位数。
打开html开发软件，新建一个html代码页面。
在html代码页面找打
标签，在这个标签后面创建一个<script>用于设置保存两位小数。</p><p>在<script>创建一个number类型的数字，然后使用toFixed(2)对number类型数字保存两位小数，最后使用document.write打印出成果保存两位小数数字。</p><p>JavaScript代码：</p><p><script type="text/javascript"></p><p> var num = 123;//定义一个number类型；</p><p> document.write("保存两位小数："+ num.toFixed(2) );</p><p> </script></p><p>保存html代码页面，然后使用浏览器打开即可看到保存两位小数的数字。</p> </div>
<div class="entry-footer clear">
<div class="entry-tags"><span class="tag-links">标签:js,toFixed,小数</span></div>
</div>
</article>
<div class="related-content"><span class="section-title">相关文章</span>
<ul class="clear">
<li class="hentry ht_grid_1_3">
<a class="thumbnail-link" href="/article/304.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0901/d3d937a0.jpg" alt="车载dvd维修方法"></div>
</a>
<div class="entry-title"><a href="/article/304.html">车载dvd维修方法</a></div>
<div class="entry-meta">
<span class="entry-date">2025-07-15 02:58</span>
<span class="entry-views">阅读(1083)</span>
</div>
</li>
<li class="hentry ht_grid_1_3">
<a class="thumbnail-link" href="/article/6540.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0902/f76dc586.jpg" alt="摩托车交强险价格多少"></div>
</a>
<div class="entry-title"><a href="/article/6540.html">摩托车交强险价格多少</a></div>
<div class="entry-meta">
<span class="entry-date">2025-07-28 02:58</span>
<span class="entry-views">阅读(1080)</span>
</div>
</li>
<li class="hentry ht_grid_1_3">
<a class="thumbnail-link" href="/article/74366.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/0827/efa1a072.jpg" alt="192.168.10.1 路由器设置"></div>
</a>
<div class="entry-title"><a href="/article/74366.html">192.168.10.1 路由器设置</a></div>
<div class="entry-meta">
<span class="entry-date">2025-09-15 15:28</span>
<span class="entry-views">阅读(1035)</span>
</div>
</li>
</ul>
</div>
<div class="popular-content entry-related">
<div class="popular-loop">
<div class="hentry">
<div class="entry-title">
<span class="post-num num-1">1</span>
<a href="/article/71385.html">如何查询华为手机附近销售门店地址及电话</a>
</div>
<div class="entry-meta"><span class="entry-views"><i class="fa fa-eye"></i> 1022 阅读</span></div>
</div>
<div class="hentry">
<div class="entry-title">
<span class="post-num num-2">2</span>
<a href="/article/1061.html">怎么让智能机更省流量</a>
</div>
<div class="entry-meta"><span class="entry-views"><i class="fa fa-eye"></i> 1012 阅读</span></div>
</div>
<div class="hentry">
<div class="entry-title">
<span class="post-num num-3">3</span>
<a href="/article/74173.html">海南社保卡在哪查看可用余额</a>
</div>
<div class="entry-meta"><span class="entry-views"><i class="fa fa-eye"></i> 1011 阅读</span></div>
</div>
<div class="hentry">
<div class="entry-title">
<span class="post-num num-4">4</span>
<a href="/article/321.html">《火影死神传》的基本玩法</a>
</div>
<div class="entry-meta"><span class="entry-views"><i class="fa fa-eye"></i> 1008 阅读</span></div>
</div>
<div class="hentry">
<div class="entry-title">
<span class="post-num num-5">5</span>
<a href="/article/205.html">怎样登陆qq空间</a>
</div>
<div class="entry-meta"><span class="entry-views"><i class="fa fa-eye"></i> 1007 阅读</span></div>
</div>
</div>
</div>
</main>
</div>
</div>
<aside id="secondary" class="sidebar">
<div class="widget widget_posts_thumbnail">
<div class="widget-title"><span>大家喜欢的文章</span></div>
<ul>
<li class="clear">
<a href="/article/304.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0901/d3d937a0.jpg" alt="车载dvd维修方法"></div>
</a>
<div class="entry-wrap"><a href="/article/304.html">车载dvd维修方法</a>
<div class="entry-meta">2025-07-15 02:58</div>
</div>
</li>
<li class="clear">
<a href="/article/6540.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0902/f76dc586.jpg" alt="摩托车交强险价格多少"></div>
</a>
<div class="entry-wrap"><a href="/article/6540.html">摩托车交强险价格多少</a>
<div class="entry-meta">2025-07-28 02:58</div>
</div>
</li>
<li class="clear">
<a href="/article/74366.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/0827/efa1a072.jpg" alt="192.168.10.1 路由器设置"></div>
</a>
<div class="entry-wrap"><a href="/article/74366.html">192.168.10.1 路由器设置</a>
<div class="entry-meta">2025-09-15 15:28</div>
</div>
</li>
<li class="clear">
<a href="/article/71385.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/0827/84417c69.jpg" alt="如何查询华为手机附近销售门店地址及电话"></div>
</a>
<div class="entry-wrap"><a href="/article/71385.html">如何查询华为手机附近销售门店地址及电话</a>
<div class="entry-meta">2025-09-13 13:46</div>
</div>
</li>
<li class="clear">
<a href="/article/1061.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0901/49b21cee.jpg" alt="怎么让智能机更省流量"></div>
</a>
<div class="entry-wrap"><a href="/article/1061.html">怎么让智能机更省流量</a>
<div class="entry-meta">2025-07-16 16:49</div>
</div>
</li>
<li class="clear">
<a href="/article/74173.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/0827/0ff2faf5.jpg" alt="海南社保卡在哪查看可用余额"></div>
</a>
<div class="entry-wrap"><a href="/article/74173.html">海南社保卡在哪查看可用余额</a>
<div class="entry-meta">2025-09-15 12:14</div>
</div>
</li>
<li class="clear">
<a href="/article/321.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0901/89541a2d.jpg" alt="《火影死神传》的基本玩法"></div>
</a>
<div class="entry-wrap"><a href="/article/321.html">《火影死神传》的基本玩法</a>
<div class="entry-meta">2025-07-15 03:50</div>
</div>
</li>
<li class="clear">
<a href="/article/205.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2024/0901/cdd26792.jpg" alt="怎样登陆qq空间"></div>
</a>
<div class="entry-wrap"><a href="/article/205.html">怎样登陆qq空间</a>
<div class="entry-meta">2025-07-14 22:01</div>
</div>
</li>
</ul>
</div>
<div class="widget widget_posts_thumbnail">
<div class="widget-title"><span>近期发布的文章</span></div>
<ul>
<li class="clear">
<a href="/article/139679.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/8855d08b.jpg" alt="tar打包split分割分解拆分大包文件"></div>
</a>
<div class="entry-wrap"><a href="/article/139679.html">tar打包split分割分解拆分大包文件</a>
<div class="entry-meta">2025-11-03 03:37</div>
</div>
</li>
<li class="clear">
<a href="/article/139681.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/23c183e0.jpg" alt="支付宝怎么查看获得的公益证书"></div>
</a>
<div class="entry-wrap"><a href="/article/139681.html">支付宝怎么查看获得的公益证书</a>
<div class="entry-meta">2025-11-03 03:38</div>
</div>
</li>
<li class="clear">
<a href="/article/139673.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/1850d1d5.jpg" alt="请问湿润与半湿润，干旱与半干旱区的分界线分别是什么?阳坡与迎风坡的区别与联系"></div>
</a>
<div class="entry-wrap"><a href="/article/139673.html">请问湿润与半湿润，干旱与半干旱区的分界线分别是什么?阳坡与迎风坡的区别与联系</a>
<div class="entry-meta">2025-11-03 03:30</div>
</div>
</li>
<li class="clear">
<a href="/article/139667.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/22e9fc13.jpg" alt="如何使用PPT的排练计时功能"></div>
</a>
<div class="entry-wrap"><a href="/article/139667.html">如何使用PPT的排练计时功能</a>
<div class="entry-meta">2025-11-03 03:24</div>
</div>
</li>
<li class="clear">
<a href="/article/139666.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/edce631b.jpg" alt="魔兽世界游戏任务执政官宝地怎么完成"></div>
</a>
<div class="entry-wrap"><a href="/article/139666.html">魔兽世界游戏任务执政官宝地怎么完成</a>
<div class="entry-meta">2025-11-03 03:24</div>
</div>
</li>
<li class="clear">
<a href="/article/139665.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/bbf2b71b.jpg" alt="赛艇运动简介"></div>
</a>
<div class="entry-wrap"><a href="/article/139665.html">赛艇运动简介</a>
<div class="entry-meta">2025-11-03 03:22</div>
</div>
</li>
<li class="clear">
<a href="/article/139664.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/64875a9d.jpg" alt="苹果朗读怎么换声音"></div>
</a>
<div class="entry-wrap"><a href="/article/139664.html">苹果朗读怎么换声音</a>
<div class="entry-meta">2025-11-03 03:21</div>
</div>
</li>
<li class="clear">
<a href="/article/139659.html">
<div class="thumbnail-wrap"><img src="/upload/jingyan/2025/1013/ad7f7e9f.jpg" alt="口袋妖怪漆黑的魅影岩石道馆攻略"></div>
</a>
<div class="entry-wrap"><a href="/article/139659.html">口袋妖怪漆黑的魅影岩石道馆攻略</a>
<div class="entry-meta">2025-11-03 03:16</div>
</div>
</li>
</ul>
</div>
</aside>
</div>
<footer id="colophon" class="site-footer">
<div id="site-bottom" class="clear">
<div class="container">
<div class="site-info"><a href="/sitemap.xml">网站地图</a> - <a href="https://beian.miit.gov.cn/" target="_blank" rel="nofollow">闽ICP备2025090153号-6</a> - 联系邮箱：1465333496@qq.com </div>
</div>
</div>
</footer>
</div>
<div id="back-top" style="display: none;">
<a href="#top" title="返回顶部"><span class="genericon genericon-collapse"></span></a>
</div>
<script>(function ($) {
$(document).ready(function () {
"use strict";
$('#primary-menu').slicknav({
prependTo: '#slick-mobile-menu',
allowParentLinks: true,
label: '导航'
});
});
})(jQuery);</script>
<script defer="" src="/themes/simpleboot3/static/js/autoptimize.js"></script>
</body>
</html> 
Simone
发布于 2025-11-03 03:34:46
818 阅读