Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

¹ØÓÚjavascriptÅжÏÎļþ´óС

<script type="text/javascript">  
function getFileSize(filePath) {  
   var image=new Image();  
   image.dynsrc=filePath;  
   alert(image.fileSize);  
}  
</script>  
<body>  
<INPUT TYPE="file" NAME="file" SIZE="30" onchange="getFileSize(this.value)">  
</body>


Ïà¹ØÎĵµ£º

±àÒëΪJavaScript£º²»¼æÈÝÐÔµÄÁíÀà½â¾ö·½°¸


JavaScriptºÜ³£Ó㬵«Ò²ÒòΪÆä²»¼æÈÝÐÔºÜÁîÈËÍ·ÌÛ¡£Ò»¸öÁíÀàµÄ½â
¾ö·½·¨¾ÍÊÇ£¬½«ÆäËûÓïÑÔ±àÒëΪJavaScript¡£±¾ÎÄÁоÙÁËGWT¡¢Smalltalk¡¢PythonµÈÓïÑÔ½«JavaScript×öΪ±àÒëÄ¿±êµÄÇé
¿ö¡£
¸ã¹ýWeb¿ª·¢µÄ¶¼»ò¶à»òÉÙÃþ¹ýJavaScript£¬¶ø¾¡¹ÜJavascriptÎÞ´¦²»ÔÚ£¬µ«»¹ÊǺÜÄÑÈÃÈËϲ»¶Ëü¡£ÔÚÀàËÆ
Google V8¡¢Apple/WebKitµÄNi ......

javascriptÖ®getAttribute()·½·¨

getAttribute()·½·¨
 ¡ñÒ»·ÝÎĵµ¾ÍÊÇÒ»¿Ã½ÚµãÊ÷¡£
  ¡ñ½Úµã·ÖΪ²»Í¬µÄÀàÐÍ£ºÔªËؽڵ㡢ÊôÐÔ½ÚµãºÍÎı¾½ÚµãµÈ¡£
  ¡ñgetElementById()·½·¨½«·µ»ØÒ»¸ö¶ÔÏ󣬸öÔÏó¶ÔÓ¦×ÅÎĵµÀïµÄÒ»¸öÌØ¶¨µÄÔªËØ½Úµã¡£
  ¡ñgetElementsByTagName()·½·¨½«·µ»ØÒ»¸ö¶ÔÏóÊý×飬ËüÃÇ·Ö±ð¶ÔÓ¦×ÅÎĵµÀïµÄÒ»¸ ......

javaScriptÈçºÎ¼àÌýä¯ÀÀÆ÷¹Ø±Õʼþ

×î½üд¶«Î÷µÄʱºò·¢ÏÖÐèÒª¶Ôä¯ÀÀÆ÷µÄ¹Ø±Õ½øÐмàÌý,µ±Óû§¹Ø±ÕµÄʱºòÐèÒªµ÷ÓÃsession.invalid();Çå¿ÕsessionÐÅÏ¢,µ«ÊÇ×Ðϸһ²éÊֲᷢÏÖÎÞÂÛÊÇbody»¹ÊÇwindow¶¼Ã»ÓÐoncloseʼþ,Ö®ºóonload,onunload,beforeunloadÈý¸öʼþ
È»¶øÈý¸öʱ¼äÎÞÂÛÊÇÄĸö¶¼ÎÞ·¨µ¥¶À½â¾öµ¥¶À¼àÌýä¯ÀÀÆ÷¹Ø±ÕµÄʼþ,ÒòΪÔÚä¯ÀÀÆ÷Õý³£ÔËÐÐʱÏȼÓÔØµÄÊÇbe ......

JavascriptÖг£Óõö¼¼ÇÉ


1. oncontextmenu="window.event.returnValue=false" ½«³¹µ×ÆÁ±ÎÊó±êÓÒ¼ü
<table border oncontextmenu=return(false)> <td>no </table> ¿ÉÓÃÓÚTable
2. <body onselectstart="return false"> È¡Ïûѡȡ¡¢·ÀÖ¹¸´ÖÆ
3. onpaste="return false" ²»×¼Õ³Ìù
4. oncopy="return false;" oncut=" ......

javascriptË«ÒýºÅתÒå

http://www.cnblogs.com/yzx99/archive/2008/08/08/1263416.html
µ¥ÒýºÅ,Ë«ÒýºÅ,javascript,HTML,תÒå×Ö·û
ÔÚÒ»¸öÍøÒ³Öеİ´Å¥£¬Ð´onclickʼþµÄ´¦Àí´úÂ룬²»Ð¡ÐÄд³ÉÈçÏ£º
<input value="Test" type="button" onclick="alert(""OK"");" />
IEÌáʾ³ö´íºó£¬ÔÙÂþ²»¾­ÐĵظÄΪ£º
<input value="Test" type="bu ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ