锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20122;&#27954;&#31934;&#21697;&#119;&#119;&#119;&#44;&#22269;&#20135;&#20027;&#25773;&#31119;&#21033;&#22312;&#32447;&#44;&#31934;&#21697;&#22269;&#20135;&#20081;&#30721;&#20037;&#20037;&#20037;&#20037;&#20037;&#56;&#56;&#97;&#118;</title><link>http://www.aygfsteel.com/Mosquito323/</link><description /><language>zh-cn</language><lastBuildDate>Sat, 21 Jun 2025 20:24:20 GMT</lastBuildDate><pubDate>Sat, 21 Jun 2025 20:24:20 GMT</pubDate><ttl>60</ttl><item><title>parseFloat鐨勭簿搴﹂棶棰?/title><link>http://www.aygfsteel.com/Mosquito323/archive/2009/01/10/250819.html</link><dc:creator>NWU绱皵涓滄潵</dc:creator><author>NWU绱皵涓滄潵</author><pubDate>Sat, 10 Jan 2009 09:11:00 GMT</pubDate><guid>http://www.aygfsteel.com/Mosquito323/archive/2009/01/10/250819.html</guid><wfw:comment>http://www.aygfsteel.com/Mosquito323/comments/250819.html</wfw:comment><comments>http://www.aygfsteel.com/Mosquito323/archive/2009/01/10/250819.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/Mosquito323/comments/commentRss/250819.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/Mosquito323/services/trackbacks/250819.html</trackback:ping><description><![CDATA[<p>鍐檍s鏃墮亣鍒扮殑闂錛屽凡緇忚В鍐籌紝鍋氱瑪璁?br />
<br />
鍦╦s涓繘琛屼互鍏冧負(fù)鍗曚綅榪涜閲戦璁＄畻鏃?浣跨敤parseFloat浼?xì)漶旂敓绮惧害闂?br />
</p>
<p>var price = 10.99;<br />
var <span id="wmqeeuq"    class="sourceRowText">quantity</span> = 7;<br />
var needPay = parseFloat(price * quantity);<br />
<br />
needPay鐨勬紜粨鏋滃簲璇ユ槸76.93鍏?nbsp; 浣嗘槸榪愯鍚庡彂鐜皀eedPay涓?span class="objectBox objectBox-number">76.93000000000001</span>&nbsp;<br />
姝ゆ儏鍐靛彲閫氳繃 toFixed(n)&nbsp; 鏂規(guī)硶淇 浣嗘槸榪欎釜鏂規(guī)硶瀵?js鐗堟湰瑕佹眰杈冮珮 涓嶈兘鍏煎ie5<br />
<br />
鍙︿竴涓В鍐蟲柟妗堟槸錛?灝嗗厓涓哄崟浣嶇殑閲戦涔樹互100鎹㈢畻涓哄垎榪涜璁＄畻<br />
<br />
var price = 10.99<br />
var quantity = 7<br />
var needPay = Math.floor(parseFloat(price*100 * quantity))/100;<br />
<br />
parseFloat(price*100 * quantity)鐨勮綆楃粨鏋滄槸<span id="wmqeeuq"    class="objectBox objectBox-number">7693.000000000001</span>&nbsp;&nbsp; 浣跨敤Math.round()鏂規(guī)硶鍥涜垗浜斿叆錛屽啀闄?00&nbsp; 鍗充負(fù)姝ｇ‘鐨勭粨鏋?br />
<br />
PS錛氶『渚垮鍒頒簡涓�鐐癸細(xì)Math.ceil() Math.floor() Math.round() 鐨勫尯鍒?br />
Math.ceil() 鏄悜涓婂彇鏁?br />
Math.floor()鏄悜涓嬪彇鏁?br />
Math.round()鏄洓鑸嶄簲鍏?br />
</p>
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