﻿<?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>BlogJava-每日一得-随笔分类-javascript</title><link>http://www.blogjava.net/alex/category/19515.html</link><description>不求多得,只求一得
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</description><language>zh-cn</language><lastBuildDate>Tue, 27 Feb 2007 12:05:30 GMT</lastBuildDate><pubDate>Tue, 27 Feb 2007 12:05:30 GMT</pubDate><ttl>60</ttl><item><title>用js检查上传文件大小</title><link>http://www.blogjava.net/alex/archive/2007/01/25/96004.html</link><dc:creator>Alex</dc:creator><author>Alex</author><pubDate>Thu, 25 Jan 2007 09:16:00 GMT</pubDate><guid>http://www.blogjava.net/alex/archive/2007/01/25/96004.html</guid><wfw:comment>http://www.blogjava.net/alex/comments/96004.html</wfw:comment><comments>http://www.blogjava.net/alex/archive/2007/01/25/96004.html#Feedback</comments><slash:comments>3</slash:comments><wfw:commentRss>http://www.blogjava.net/alex/comments/commentRss/96004.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/alex/services/trackbacks/96004.html</trackback:ping><description><![CDATA[key words: js,javascript,检查上传文件大小<br /><br />有时需要在客户端获得待上传得文件大小，google了一下，发现下面这个用法.<br /><br /><div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><img src="http://www.blogjava.net/images/OutliningIndicators/None.gif" align="top" /><span style="COLOR: #0000ff">&lt;</span><span style="COLOR: #800000">html</span><span style="COLOR: #0000ff">&gt;</span><span style="COLOR: #000000">  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">&lt;</span><span style="COLOR: #800000">input </span><span style="COLOR: #ff0000">type</span><span style="COLOR: #0000ff">="file"</span><span style="COLOR: #ff0000"> name</span><span style="COLOR: #0000ff">="file1"</span><span style="COLOR: #ff0000"> onchange</span><span style="COLOR: #0000ff">="ShowSize(this.value)"</span><span style="COLOR: #0000ff">&gt;</span><span style="COLOR: #000000">  <br /><img id="Codehighlighter1_106_307_Open_Image" onclick="this.style.display='none'; Codehighlighter1_106_307_Open_Text.style.display='none'; Codehighlighter1_106_307_Closed_Image.style.display='inline'; Codehighlighter1_106_307_Closed_Text.style.display='inline';" src="http://www.blogjava.net/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" /><img id="Codehighlighter1_106_307_Closed_Image" style="DISPLAY: none" onclick="this.style.display='none'; Codehighlighter1_106_307_Closed_Text.style.display='none'; Codehighlighter1_106_307_Open_Image.style.display='inline'; Codehighlighter1_106_307_Open_Text.style.display='inline';" src="http://www.blogjava.net/images/OutliningIndicators/ContractedBlock.gif" align="top" /></span><span style="COLOR: #0000ff">&lt;</span><span style="COLOR: #800000">script </span><span style="COLOR: #ff0000">language</span><span style="COLOR: #0000ff">="JavaScript"</span><span style="COLOR: #0000ff">&gt;</span><span id="Codehighlighter1_106_307_Closed_Text" style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><img src="http://www.blogjava.net/images/dot.gif" /></span><span id="Codehighlighter1_106_307_Open_Text"><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" /></span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">&lt;!--</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" /></span><span style="COLOR: #0000ff; BACKGROUND-COLOR: #f5f5f5">function</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> ShowSize(files)  <br /><img id="Codehighlighter1_143_296_Open_Image" onclick="this.style.display='none'; Codehighlighter1_143_296_Open_Text.style.display='none'; Codehighlighter1_143_296_Closed_Image.style.display='inline'; Codehighlighter1_143_296_Closed_Text.style.display='inline';" src="http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" /><img id="Codehighlighter1_143_296_Closed_Image" style="DISPLAY: none" onclick="this.style.display='none'; Codehighlighter1_143_296_Closed_Text.style.display='none'; Codehighlighter1_143_296_Open_Image.style.display='inline'; Codehighlighter1_143_296_Open_Text.style.display='inline';" src="http://www.blogjava.net/images/OutliningIndicators/ContractedSubBlock.gif" align="top" /></span><span id="Codehighlighter1_143_296_Closed_Text" style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><img src="http://www.blogjava.net/images/dot.gif" /></span><span id="Codehighlighter1_143_296_Open_Text"><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">{  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" />  </span><span style="COLOR: #0000ff; BACKGROUND-COLOR: #f5f5f5">var</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> fso,f;  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" />  fso</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</span><span style="COLOR: #0000ff; BACKGROUND-COLOR: #f5f5f5">new</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> ActiveXObject(</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">Scripting.FileSystemObject</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">);  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" />  f</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">fso.GetFile(files);<br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" />  </span><span style="COLOR: #0000ff; BACKGROUND-COLOR: #f5f5f5">var</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> mySize </span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">=</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> f.size</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">/</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">1024</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">;<br /><img src="http://www.blogjava.net/images/OutliningIndicators/InBlock.gif" align="top" />  alert(mySize</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">+</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5"> K </span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">"</span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">);  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockEnd.gif" align="top" />}</span></span><span style="COLOR: #000000; BACKGROUND-COLOR: #f5f5f5">  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/ExpandedBlockEnd.gif" align="top" /></span><span style="COLOR: #008000; BACKGROUND-COLOR: #f5f5f5">//</span><span style="COLOR: #008000; BACKGROUND-COLOR: #f5f5f5">--&gt;  </span><span style="COLOR: #008000; BACKGROUND-COLOR: #f5f5f5"><br /><img src="http://www.blogjava.net/images/OutliningIndicators/None.gif" align="top" /></span></span><span style="COLOR: #0000ff">&lt;/</span><span style="COLOR: #800000">script</span><span style="COLOR: #0000ff">&gt;</span><span style="COLOR: #000000">  <br /><img src="http://www.blogjava.net/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">&lt;/</span><span style="COLOR: #800000">html</span><span style="COLOR: #0000ff">&gt;</span></div><br /><br />BTW: 奇怪，COS上传组件里怎么没有获得上传文件大小的方法?  MultipartRequest里是没有，有知道的兄弟通知下哦<img src ="http://www.blogjava.net/alex/aggbug/96004.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/alex/" target="_blank">Alex</a> 2007-01-25 17:16 <a href="http://www.blogjava.net/alex/archive/2007/01/25/96004.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>