javascript cookies²Ù×÷
javascript cookies²Ù×÷
<script>
//дcookiesº¯Êý ×÷ÕߣºµÔÕñ¿
function SetCookie(name,value)//Á½¸ö²ÎÊý£¬Ò»¸öÊÇcookieµÄÃû×Ó£¬Ò»¸öÊÇÖµ
{
var Days = 30; //´Ë cookie ½«±»±£´æ 30 Ìì
var exp = new Date(); //new Date("December 31, 9998");
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)//È¡cookiesº¯Êý
{
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null) return unescape(arr[2]); return null;
}
function delCookie(name)//ɾ³ýcookie
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
SetCookie ("xiaoqi", "3")
alert(getCookie('xiaoqi'));
</script>
Ò»¸ö·Ç³£ÊµÓõÄjavascript¶ÁдCookieº¯Êý
Ò»¸ö·Ç³£ÊµÓõÄjavascript¶ÁдCookieº¯Êý
function GetCookieVal(offset)
//»ñµÃCookie½âÂëºóµÄÖµ
{
var endstr = documents.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = documents.cookie.length;
return unescape(documents.cookie.substring(offset, endstr));
}
function SetCookie(name, value)
//É趨CookieÖµ
{
var expdate = new Date();
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc&nbs
Ïà¹ØÎĵµ£º
<html>
<head>
<mce:script type="text/javascript"><!--
function myclick(event){
var ev =event.srcElement ? event.srcElement : event.target;
}
// --></mce:script>
......
[ 2007-8-6 17:03:00 | By: ibrahim ]
javascript²Ù×÷Select±ê¼ÇÖÐoptions¼¯ºÏ
ÏÈÀ´¿´¿´options¼¯ºÏµÄÕ⼸¸ö·½·¨£º
options.add(option)·½·¨Ïò¼¯ºÏÀïÌí¼ÓÒ»Ïîoption¶ÔÏó£»
options.remove(index)·½·¨ÒƳýoptions¼¯ºÏÖеÄÖ¸¶¨Ï
options(index)»òoptions.item(index)¿ÉÒÔͨ¹ýË÷Òý»ñÈ¡options¼¯º ......
Èç¹ûÄãÏë½øÒ»²½Á˽âÈçºÎÓÃJavaScriptÀ´ÎªÍøÒ³Ìí¼Ó½»»¥ÐԵϰ£¬ÄãÒ²ÐíÒѾÌý¹ýJavaScriptµÄʼþ´úÀí£¨event delegation£©ÁË£¬²¢ÇÒ»á¾õµÃÖ»ÓÐÄÇЩţ±ÆºæºæµÄJavaScript³ÌÐòÔ±²Å»á¹ØÐÄÕâÑù¸´ÔÓµÄÉè¼ÆÄ£Ê½¡£ÊÂʵÉÏ£¬Èç¹ûÄãÒѾ֪µÀÔõôÑùÈ¥Ìí¼ÓJavaScriptµÄʼþ´¦ÀíÆ÷£¨event handler£©£¬ÊµÏÖʼþ´úÀíÒ²ÊǼþÇá¶øÒ×¾ÙµÄÊÂÇé¡£
J ......
ÔÚJavaÖУ¬»ù±¾ÀàÐÍÖ®¼äµÄÇ¿ÖÆ×ª»»Ò²²»ÊÇÕâÑùµÄ£¬±ÈÈ磬ÕûÊýҪת»»³É×Ö·û´®£¬±ØÐëʹÓÃInteger.toString()¾²Ì¬·½·¨»òÕßString.valueOf()¾²Ì¬·½·¨£¬°Ñ×Ö·û´®×ª»»ÎªÕûÊý£¬±ØÐëʹÓÃInteger.valueOf()¡£
¿É¼û£¬²»ÄܰÑJavaScriptÖеÄÀàÐÍת»»¿´×÷Ϊ“Ç¿ÖÆÀàÐÍת»»”¡£
ÔÚJavaScriptÖУ¬DoubleÀàÐͺÍIntÀàÐͶ¼ÊÇ¿´×÷Ϊ ......
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 ......