Example code _ json

Sometimes we need ajax to process json data returned by php, which is suitable for users who often use php for development. For those who need it, refer to test.html.

The Code is as follows:

Click
Function ajax_init ()
{
Var ajax = false;
Try {
Ajax = new ActiveXObject ("Msxml2.XMLHTTP ");
} Catch (e ){
Try {
Ajax = new ActiveXObject ("Microsoft. XMLHTTP ");
} Catch (E ){
Ajax = false;
}
}
If (! Ajax & typeof XMLHttpRequest! = 'Undefined '){
Ajax = new XMLHttpRequest ();
}
Return ajax;
}
Function post_data ()
{
Var url = "/server/xml. php ";
Var show_check = document. getElementById ("show_check ");
Var show_flag = document. getElementById ("show_flag ");
Var ajax = ajax_init ();
Ajax. open ("GET", url, true );
// Var img = "";
Ajax. onreadystatechange = function ()
{
If (ajax. readyState = 4 & ajax. status = 200)
{
Var ret = ajax. responseText;
Var show_info = eval (ret );
Show_check.innerHTML = show_info [0]. no1; // bsd
Show_flag.innerHTML = show_info [0]. no2; // wuddy
// Alert ("responseXML's value:" + info [0]. firstChild. data );
}
/* Else
{
Show. innerHTML = img;
}*/
}
Ajax. send (null );
}

Json. php

The Code is as follows:

/* If $ info = array ('no1' => 'bsd', 'no2 '=> 'wuddy', 'no3' => 'xie') is written here ');*/
/* Similarly, the html file must be var show_info = eval ('[' + ret + ']'); all return an object */
$ Info = array ('no1' => 'bsd', 'no2 '=> 'wuddy', 'no3' => 'xie '));
$ Userinfo = json_encode ($ info );
Echo $ userinfo;
?>