<!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>
<title>JSON.parse()</title>
<script type="text/javascript">
//示例1：此示例使用 JSON.parse 将 JSON 字符串转换为对象
var jsontext = '{"firstname":"Jesper","surname":"Aaberg","phone":["555-0100","555-0120"]}';//JSON 字符串
var contact = JSON.parse(jsontext);
document.write(contact.surname + ", " + contact.firstname + ", "+ contact.phone);
//示例2：和实例1是一样的效果
var jsontext2 = {"firstname":"Jesper","surname":"Aaberg","phone":["555-0100","555-0120"]};//JSON 对象
//var contact2 = JSON.parse(jsontext2);
document.write("<br /><br />"+jsontext2.surname + ", " + jsontext2.firstname + ", "+ jsontext2.phone);
</script>
</head>
<body>
</body>
</html>
输出：
Aaberg, Jesper, 555-0100,555-0120
Aaberg, Jesper, 555-0100,555-0120
************************************************************************************
前端页面接收JSON对象的实例：
<script>
sendRecord('1');
function sendRecord(record){
var req = {
user_id:<?php echo $userId;?>,
record:record,
}
$.ajax({
url: "/3G/wall/ajax_send_record/",
type:"post",
data:req,
dataType:"JSON", //返回数据格式为JSON对象
success: function(res){
if(res.result==1){ //因为传递过来是JSON对象，所以不用<span style="font-family:Simsun;">JSON.parse()解析</span>
alert('11');
}else if(res.result==2){
alert('22');
}else if(res.result==3){
alert('33');
}
},
error: function(){
alert('error000');
console.log(this);
}
});
}
</script>
<?php
function ajax_send_record()
{
$record = $_POST('record');
if ($record==1) {
$json['result'] = 1;
}elseif($record==2){
$json['result'] = 2;
}elseif(elseif($record==3){
$json['result'] = 3;
}
$json = json_encode($json);
echo $json;
}
?>