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 ×îÐÂÎÄÕ : ajax

ajax֪ʶµã

1.XMLHttpRequest¶ÔÏó
  open("method","URL""[,asyncFlag[,"userName"[, "password"]]])
    ½¨Á¢¶Ô·þÎñÆ÷µÄ·ÃÎÊ¡£ÆäÖÐmethod²ÎÊý¿ÉÒÔʹÓÃGET¡¢POST¼°PUT£¬URL²ÎÊý¼È¿ÉÒÔʹÓþø¶ÔµØÖ·£¬Ò²¿ÉÒÔʹÓÃÏà¶ÔµØÖ·£¬´ËÍ⻹°üÀ¨Ó뽨Á¢Á¬½ÓÏà¹ØµÄÈý¸ö²ÎÊý
    send(content)  Ïò·þÎñÆ÷·¢ËÍÇëÇó
    responseXML 
·þÎñÆ÷½ø³Ì·µ»ØÊý¾ÝµÄ¼æÈÝ
DOM
µÄ
XML
Îĵµ¶ÔÏó
   ResponseText ·þÎñÆ÷½ø³Ì·µ»ØÊý¾ÝµÄÎı¾£¬±íʾΪһ¸ö×Ö·û´®
  eg: Óû§ÃÜÂëÑéÖ¤
  
<script
type="text/javascript">   
      
var xmlhttpreq = false;
   
     
function createxmlhttprequest() {
           ...
     
}
 
     
//
·¢ËÍÇëÇóº¯Êý
     
 
function sendRequest(url) {
 &nb ......

AJAX¿ò¼Ü±È½Ï£ºjQuery£¬Mootools£¬Dojo£¬Ext JS

       AJAXÊÇweb20µÄ»ùʯ£¬ÏÖÔÚÍøÉÏÁ÷Ðм¸ÖÖ¿ªÔ´µÄAJAX¿ò¼Ü£¬±ÈÈ磺jQuery,Mootools,Dojo,Ext JSµÈµÈ£¬ÄÇôÎÒÃǵ½µ×ÔÚʲôÇé¿öϸÃʹÓÃÄǸö¿ò¼Ü£¿ÒÔÏÂÊÇÒ»×éÕª³­µÄÊý¾Ý£º      
       AjaxianÔÚ2007Äêµ×¶ÔAjax¹¤¾ß½øÐÐÁ˵÷²é£¬²¿·Öµ÷²é½á¹û¼ûÏÂ±í£¨ÆäÖÐÊý×ÖΪµ÷²éÕßʹÓøù¤¾ßµÄ°Ù·Ö±È£©£º
                  Prototype jQuery Ext      Script.aculo.us Mootools YUI   JSON   Dojo   Backbase 
                  34.1%      29.3% 22.5% 22.3%             14.3%     13% 12.9% 11.8% 8.3%
      ÆäÖÐPrototypeʹÓÃÂÊ×î¸ß£¬ºÜ´ó³Ì¶ÈÉÏÊÇÒòΪËüÊÇ×îÔç³ÉÊìµÄ¿ò¼Ü£¬ºÜ¶àÒÔÇ ......

AjaxÒ첽ˢÐÂ

×¢Òâ:
1¡¢<div id="iframe">ÏÔʾˢеÄÄÚÈÝ</div>
2¡¢µ÷ÓÃÒ첽ˢÐÂ:javascript:OnLink('µØÖ·')
<!--ajaxÒ첽ˢÐÂ-->
<script type="text/javascript">
 //´´½¨XMLHttpRequestc¶ÔÏó
  var  xmlHttp=false;
  //ÅжÏä¯ÀÀÆ÷
  function createXMLHttpRequest(){
    if(window.ActiveXObject){//IEä¯ÀÀÆ÷
      try{
        xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }catch(e){
        try{
          xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }catch(e){}
      }
    }else{//ÆäËûä¯ÀÀÆ÷£ºÈçmozilla µÄ fireFox(»ðºü) »òÕß netscape 7
      xmlHttp=new XMLHttpRequest();
    }
  }
  //Ìá½»»ñµÃÖµºóµÄ·½·¨
&nb ......

Google Ajax Search APIµÄ»ù±¾Ê¹Ó÷½·¨

Google Search API
²Î¿¼Êé¼®£ºGoogle API´óÈ«—±à³Ì?¿ª·¢?ʵÀý
Êé¼®¶Ô¼¸Ê®ÖÖGoogle³£ÓÃAPI½øÐÐÁËÊáÀíºÍ½éÉÜ£¬¸¨ÒÔÐÐÖ®ÓÐЧµÄ´úÂëʵÀý
http://code.google.com/intl/zh-CN/apis/ajaxsearch/documentation/
1£©Google Site Search
GoogleÕ¾µãÄÚǶËÑË÷µÄʹÓ÷½·¨
<%@ page language="java" contentType="text/html; charset=GBK"%>
<html>
<head>
<title>Ê×Ò³</title>
</head>
<body>
Õ¾ÄÚÈ«ÎÄËÑË÷£¬¹È¸èºÏ×÷Ìṩ
<!-- SiteSearch Google -->
<form method="get" action="http://www.google.com/custom"
        target="google_window">
<table border="0" bgcolor="#ffffff">
        <tr>
                <td nowrap="nowrap" valign="top" align="left" height="32"></td>
        </tr>
        <tr>
  &nb ......

ASP.NET AJAXÈëÃÅϵÁÐ

ASP.NET AJAXÈëÃÅϵÁн«»áд¹ØÓÚASP.NET AJAXһЩ¿Ø¼þµÄʹÓ÷½·¨ÒÔ¼°»ù´¡ÖªÊ¶£¬ÆäÖв¿·ÖÎÄÕÂΪԭ´´£¬Ò²ÓÐһЩÎÄÕÂÊÇÖ±½Ó·­Òë×Ô¹Ù·½Îĵµ£¬±¾²¿·ÖÄÚÈݻ᲻¶Ï¸üС£
 
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ASP.NET AJAXÈëÃÅϵÁÐ

ASP.NET AJAXÈëÃÅϵÁн«»áд¹ØÓÚASP.NET AJAXһЩ¿Ø¼þµÄʹÓ÷½·¨ÒÔ¼°»ù´¡ÖªÊ¶£¬ÆäÖв¿·ÖÎÄÕÂΪԭ´´£¬Ò²ÓÐһЩÎÄÕÂÊÇÖ±½Ó·­Òë×Ô¹Ù·½Îĵµ£¬±¾²¿·ÖÄÚÈݻ᲻¶Ï¸üС£
 
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    µ¼¶Á£ºÔÚASP.NET AJAXÖУ¬ÓÉÓÚÒ»¸öASPXÒ³ÃæÉÏÖ»ÄÜÓÐÒ»¸öScriptManager¿Ø¼þ£¬ËùÒÔÔÚÓÐĸ°æÒ³µÄÇé¿öÏ£¬Èç¹ûÐèÒªÔÚMaster-PageºÍContent-PageÖÐÐèÒªÒýÈ벻ͬµÄ½Å±¾Ê±£¬Õâ¾ ......

Ajax£ºÓµ±§JSON£¬ÈÃXML×ß¿ª


Ajax(Asynchronous JavaScript and XML)˵µ½µ×¾ÍÊÇÒ»ÖÖä¯ÀÀÆ÷Òì²½¶ÁÈ¡·þÎñÆ÷ÉÏXMLÄÚÈݵļ¼Êõ¡£ÏÖÔڵļ¼Êõ·²ÊǸúXML³¶ÉϹØϵ£¬ÔÙ¼ÓÉϸö¸ÅÄî×ö»Ï×Ó£¬¾ÍÏñ½ð×°ÁËÒ»Ñù£¬×§µÃ²»ÐС£ÃÅÍâ µÄÈË¿´µÃºÜÊÇÈÈÄÖ£¬ÃÅÀïµÄÈËÒ¡Ò¡Í·²»ÍâÈçÊÇ¡£XMLÄØ£¬¿çƽ̨µÄг±ÓïÑÔ£¿ÆäʵXML£½TXT¡£
XMLÖ»ÊÇ·ûºÏºÜ¶à¹æ·¶µÄÎı¾¡£Ëü±¾Éíʲô¶¼²»ÊÇ£¬Ö»ÊDZ£ ´æ×Ö·ûµÄÎļþ¡£¶øä¯ÀÀÆ÷Òì²½¶ÁÈ¡µÄÖ»ÊÇ·þÎñÆ÷ÉϵÄÎı¾ÄÚÈÝ£¬ËùÒÔÔÚAjax¿ª·¢Ê±ÍêÈ«²»±Ø¾ÐÄàÓÚXML¡£[°æȨËùÓУ¬www.jialing.net]
JSONµÄÀ´Àú
XML µÄ×÷ÓÃÊǸñʽ»¯Êý¾ÝÄÚÈÝ¡£Èç¹ûÎÒÃDz»ÓÃXML»¹ÓÐʲô¸üºÃµÄ·½·¨Âð£¿Õâ¸ö´ð°¸ÊÇJSON¡£½éÉÜJSON֮ǰÎÒÏȽéÉÜÒ»ÏÂJavaScriptÕâÃŽű¾Óï ÑÔ¡£½Å±¾ÓïÑÔ×ÔÉíÓж¯Ì¬Ö´ÐеÄÌ츳¡£¼´ÎÒÃÇ¿ÉÒÔ°ÑÏëÒªÖ´ÐеÄÓï¾ä·ÅÔÚ×Ö·û´®Àͨ¹ýeval()Õâ¸ö¶¯Ì¬Ö´Ðк¯ÊýÀ´Ö´ÐС£×Ö·û´®ÀïµÄÄÚÈÝ»áÏñÎÒÃÇдµÄ½Å±¾ Ò»Ñù±»Ö´ÐС£
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<HTML>
<HEAD>
<TITLE>eval example 1</TITLE>
</HEAD>
<BODY>
<script>
str = "alert('hello')";
eval(str);
</script>
</BODY>
</HTML>
´ò¿ªÒ³Ãæ»áµ¯³öhello´°¿Ú¡£
ÎÒÃÇ¿ÉÒÔÔÚ×Ö·û´®ÖзÅÈκνű¾Óï¾ä£¬°üÀ¨ÉùÃ÷Óï¾ ......

Ajax£ºÓµ±§JSON£¬ÈÃXML×ß¿ª


Ajax(Asynchronous JavaScript and XML)˵µ½µ×¾ÍÊÇÒ»ÖÖä¯ÀÀÆ÷Òì²½¶ÁÈ¡·þÎñÆ÷ÉÏXMLÄÚÈݵļ¼Êõ¡£ÏÖÔڵļ¼Êõ·²ÊǸúXML³¶ÉϹØϵ£¬ÔÙ¼ÓÉϸö¸ÅÄî×ö»Ï×Ó£¬¾ÍÏñ½ð×°ÁËÒ»Ñù£¬×§µÃ²»ÐС£ÃÅÍâ µÄÈË¿´µÃºÜÊÇÈÈÄÖ£¬ÃÅÀïµÄÈËÒ¡Ò¡Í·²»ÍâÈçÊÇ¡£XMLÄØ£¬¿çƽ̨µÄг±ÓïÑÔ£¿ÆäʵXML£½TXT¡£
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JSONµÄÀ´Àú
XML µÄ×÷ÓÃÊǸñʽ»¯Êý¾ÝÄÚÈÝ¡£Èç¹ûÎÒÃDz»ÓÃXML»¹ÓÐʲô¸üºÃµÄ·½·¨Âð£¿Õâ¸ö´ð°¸ÊÇJSON¡£½éÉÜJSON֮ǰÎÒÏȽéÉÜÒ»ÏÂJavaScriptÕâÃŽű¾Óï ÑÔ¡£½Å±¾ÓïÑÔ×ÔÉíÓж¯Ì¬Ö´ÐеÄÌ츳¡£¼´ÎÒÃÇ¿ÉÒÔ°ÑÏëÒªÖ´ÐеÄÓï¾ä·ÅÔÚ×Ö·û´®Àͨ¹ýeval()Õâ¸ö¶¯Ì¬Ö´Ðк¯ÊýÀ´Ö´ÐС£×Ö·û´®ÀïµÄÄÚÈÝ»áÏñÎÒÃÇдµÄ½Å±¾ Ò»Ñù±»Ö´ÐС£
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<HTML>
<HEAD>
<TITLE>eval example 1</TITLE>
</HEAD>
<BODY>
<script>
str = "alert('hello')";
eval(str);
</script>
</BODY>
</HTML>
´ò¿ªÒ³Ãæ»áµ¯³öhello´°¿Ú¡£
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