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jquery php ajax json

just get a json
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<mce:script src="jquery-1.3.2.min.js" mce_src="jquery-1.3.2.min.js" type="text/javascript"></mce:script>
</head>
<body>
<mce:script type="text/javascript"><!--
function getjson(){
$.getJSON('json.php',function(data){
var content="";
for(var i=0;i<data.length;i++){//Ñ­»·¶ÁÈ¡ºǫ́µÄÈ¡µÃµÄJSONÊý¾Ý
content+=data[i].name;
var par="Åŵ²£º";
for(var j=0;j<data[i].par.length;j++){//Ñ­»·¶ÁÈ¡Êý¾ÝÖеÄpar¼¯ºÏ
par+=data[i].par[j]+"¡¢";
}
content+=par+"<br/>";
}
//alert(content);
$('#jsondata').html(content);
}
);
}

// --></mce:script>
<a href="javascript:getjson();" mce_href="javascript:getjson();">getjson</a>
<div id="jsondata" style="color:red" mce_style="color:red"></div>
</body>
</html>
post a json and get a json
<mce:script type="text/javascript" language="javascript"><!--
function del(com_id,meet_id){
$.ajax({
url:'json.php',
type:'POST',
//data:'id='+id,
//dataType: 'html',
data:{com_id:com_id,meet_id:meet_id},
dataType:"json",
timeout: 1000,
error: function(){
alert('Sorry, the server is busy now.');
},
success: function(data){
if(data){
//


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