javascriptдÔÚº¯ÊýÀïÃæ
javascriptдÔÚº¯ÊýÀïÃæ
function loadscript(url) {
document.write('<scr' + 'ipt type="text/javascript" src"' + url + '"><\/scr' + 'ipt>'>)
}
Ôڳɹ¦µÄÕýÔò±í´ïʽ²éÕÒÍê³É֮ǰ£¬ÆäÊôÐÔֵΪ undefined¡£
²»Òª½«È«¾Ö RegExp ¶ÔÏóÓë ÕýÔò±í´ïʽ
¶ÔÏó»ìÏý¡£¾¡¹ÜÌýÆðÀ´ÏñÊÇÒ»»ØÊ£¬µ«ËüÃÇÊǽØÈ»²»Í¬µÄ¡£È«¾Ö RegExp
¶ÔÏóµÄÊôÐÔ°üº¬²»¶Ï¸üÐµĹØÓÚÿ¸öÆ¥Åä³öÏÖµÄÐÅÏ¢£¬¶øÕýÔò±í´ïʽ¶ÔÏóÖ»°üº¬³öÏÖÕýÔò±í´ïʽƥÅäµÄÐÅÏ¢¡£
ÏÂÃæµÄÀý×ÓÑÝʾÁËÈ«¾Ö
JavaScriptÖÐRegExp¶ÔÏóµÄÓ÷¨¡£
function
matchDemo(){
var s;
var re = new RegExp("d(b+)(d)","ig");
var str = "cdbBdbsbdbdz";
var arr = re.exec(str);
s = "$1
contains: " + RegExp.$1 + "\n";
s += "$2 contains: " + RegExp.$2 +
"\n";
s += "$3 contains: " + RegExp.$3;
return(s);
}
Ïà¹ØÎĵµ£º
JavaScriptÊÇ»ùÓÚ¶ÔÏóµÄ£¬ÈκÎÔªËØ¶¼¿ÉÒÔ¿´³É¶ÔÏó¡£È»¶ø£¬ÀàÐͺͶÔÏóÊDz»Í¬µÄ¡£±¾ÎÄÖУ¬ÎÒÃdzýÁËÌÖÂÛÀàÐͺͶÔÏóµÄÒ»Ð©ÌØµãÖ®Í⣬¸üÖØÒªµÄÊÇÑо¿ÈçºÎд³öºÃµÄ²¢ÇÒÀûÓÚÖØÓõÄÀàÐÍ¡£±Ï¾¹£¬JavaScriptÕâÖÖÁ÷ÐеĽű¾ÓïÑÔÈç¹ûÄܹ»½øÐÐÁ¼ºÃµÄ·â×°£¬²¢ÐγÉÒ»¸öÅÓ´óµÄÀàÐͿ⣬¶ÔÓÚÖØÓÃÊǷdz£ÓÐÒâÒåµÄ¡£
ÍøÉ϶ÔÓÚprototypeµÄÎÄÕ弆 ......
ÔÚjavascriptÖеõ½µ±Ç°´°¿ÚµÄ¸ßºÍ¿í
<body><SCRIPT LANGUAGE="JavaScript">
var s = "";
s += "\r\nÍøÒ³¿É¼ûÇøÓò¿í£º"+ document.body.clientWidth;
s += "\r\nÍøÒ³¿É¼ûÇøÓò¸ß£º"+ document.body.clien ......
javascriptµÄStringÀàÄÚÖú¯Êýreplace(regexp, newString)º¯ÊýÌṩÁË×Ö·û´®Ìæ»»¹¦ÄÜ£¬´Óº¯ÊýÔÐÍÉÏ¿ÉÒÔ¿´³öÖ§³Ö Regular Exp¡£´Ëº¯Êý¹¦Äܷdz£ÊµÓ㬵«Ò²Óм¸¸öµØ·½Óеã»ìÏý£¬ÏÂÃæÍ¨¹ýʵ¼ÊµÄÀý×ÓÀ´ËµÃ÷£º
±ÈÈçÎÒÃÇÏÖÔÚÒªÕë¶Ô´®
var src="<a href="http://xx.com/a/2010 ......
³ýÁËÓÃgetElementByTagName µÄÁíÒ»ÖÖ»ñÈ¡¶ÔÏ󼯺ϵķ½·¨
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" conte ......
1. document.write( " "); Êä³öÓï¾ä
2.JSÖеÄ×¢ÊÍΪ//
3.´«Í³µÄHTMLÎĵµË³ÐòÊÇ:document- >html- >(head,body)
4.Ò»¸öä¯ÀÀÆ÷´°¿ÚÖеÄDOM˳ÐòÊÇ:window- >(navigator,screen,history,location,document)
5.µÃµ½±íµ¥ÖÐÔªËØµÄÃû³ÆºÍÖµ:document.getElementById( "±íµ¥ÖÐÔªËØµÄID號 ").name(»òvalue)
6.Ò ......