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

javascript ÉèÖÃÃÜÂëÇ¿¶È

 <table>
<tr>
                <td style="width: 201px; height: 22px;" valign="middle" align="right">
                    µÇ¼ÃÜÂ룺<b><font color="red">*</font></b>
                </td>
                <td align="left" style="height: 22px">
                    <input name="txtregistpwd1" type="password" id="txtregistpwd1" class="wenbenkuang" onkeypress="pwStrength(this.value);" maxlength="20" />
    </td>
  </tr>
             <tr>
                <td style="width: 201px; height: 22px;" valign="middle" align="right" >
                     ÃÜÂëÇ¿Èõ£º&nbsp;
                </td>
                <td align="left">
                   <span id="strength_L"  style="width:40px;display:block;float:left; background:#cccccc;">Èõ</span>
                   <span id="strength_M" style="width:40px;display:block;float:left; background:#cccccc;">ÖÐ</span>


Ïà¹ØÎĵµ£º

javascriptѧϰ·½·¨

 1.²»¹ýÎÒ½ÌÄãÒ»¸öѧ×öÍøÒ³µÄ¼¼ÇÉ
ÿ¿´µ½Ò»¸öƯÁÁµÄÍøÒ³¾Í²é¿´Ï´úÂë
2.¿´ÕÅТÏéµÄÊÓÆµ
3¡£´Ó»ù´¡Ñ§Æð¡£È»ºóѧЩ»ù±¾µÄWEB¿ª·¢Ó¦ÓÃ
ÍÆ¼öÒ»¸öÍøÕ¾http://www.ccscript.cn/
¸ÃÕ¾Ïêϸ·ÖÀàJSµÄ»ù´¡,¶ÔÏó,¼«ÆäÓ¦Óã»
¸ÃÕ¾ÓжàÖÖµ±½ñÁ÷ÐеÄJS¿ò¼Ü£»
Õ¾ÄÚÖ÷´òJquery¿ò¼ÜµÄ»ù´¡¼°Ó¦Óã»
°üÀ¨ÌØÐ§´úÂëºÍÕ¹Ê¾ÌØÐ§£» ......

Javascript±Õ°ü£¨Closure£©


±Õ°ü£¨closure£©ÊÇJavascriptÓïÑÔµÄÒ»¸öÄѵ㣬ҲÊÇËüµÄÌØÉ«£¬ºÜ¶à¸ß¼¶Ó¦Óö¼ÒªÒÀ¿¿±Õ°üʵÏÖ¡£
ÏÂÃæ¾ÍÊÇÎÒµÄѧϰ±Ê¼Ç£¬¶ÔÓÚJavascript³õѧÕßÓ¦¸ÃÊǺÜÓÐÓõġ£
Ò»¡¢±äÁ¿µÄ×÷ÓÃÓò
ÒªÀí½â±Õ°ü£¬Ê×ÏȱØÐëÀí½âJavascriptÌØÊâµÄ±äÁ¿×÷ÓÃÓò¡£
±äÁ¿µÄ×÷ÓÃÓòÎ޷ǾÍÊÇÁ½ÖÖ£ºÈ«¾Ö±äÁ¿ºÍ¾Ö²¿±äÁ¿¡£
JavascriptÓïÑÔµÄÌØÊâÖ®´¦£¬¾ÍÔ ......

ÈçºÎ±ÜÃâJavascriptʼþ°ó¶¨³öÏÖÄÚ´æÐ¹Â©

"These memory leaks often
occur as a result of circular references between JavaScript objects and
objects within IE’s DOM (document object model)."
GPDE Team Blog
Ã÷ÏÔµÄDOM¶ÔÏóÓë JavaScript¶ÔÏóÑ­»·ÒýÓúܺÃÅжϣ¬ÄѵÄÊÇÒþº¬µÄÑ­»·ÒýÓÃÅжϣ¡
Òþº¬µÄÑ­»·ÒýÓÃÐèҪͨ¹ý×÷ÓÃÓòÁ´½øÐзÖÎöÅÐ ......

ÉîÈëÀí½âJavascript±Õ°ü

ÉîÈëÀí½âJavascript±Õ°ü
 ×î½üÔÚÍøÉϲéÔÄÁ˲»ÉÙJavascript±Õ°ü(closure)Ïà¹ØµÄ×ÊÁÏ£¬Ð´µÄ´ó¶àÊǷdz£µÄѧÊõºÍרҵ¡£¶ÔÓÚ³õѧÕßÀ´Ëµ±ð˵Àí½â±Õ°üÁË£¬¾ÍÁ¬ÎÄ×ÖÐðÊö¶¼ºÜÄÑ¿´¶®¡£×«Ð´´ËÎĵÄÄ¿µÄ¾ÍÊÇÓÃ×îͨË×µÄÎÄ×Ö½Ò¿ªJavascript±Õ°üµÄÕæÊµÃæÄ¿¡£
¡¡¡¡Ò»¡¢Ê²Ã´ÊDZհü£¿
¡¡¡¡“¹Ù·½”µÄ½âÊÍÊÇ£ºËùν“±Õ°ü ......

³£¼ûfirefox²»Ö§³ÖµÄJavaScriptÎÊÌâ

<a href="#" onclick="ChildNode(this);">aaa</a>Òª¸ÄΪ
<a href="#" onclick="ChildNode(event);">aaa</a>
ÎÞ·¨È¡µÃthis¶ÔÏó£¬ÒªÓÃÒÔÏ·½·¨À´È¡µÃ¡£
function ChildNode(e)
{
var evt = e ? e : (window.event ? window.event : null); //´Ë·½·¨ÎªÁËÔÚfirefoxÖеļæÈÝ
var node = evt.srcEl ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ