What does ajax. call mean? Solution

What does ajax. call mean ??? & Lt; tdalign = & quot; center & quot; & gt; & lt; imgsrc = & quot; images/{if $ link. ischeck} yes {else} no {/if}.gif & quot; onclick = & qu ajax. what does call mean ???
{$ Link. link_id}
This code calls the listTable. toggle function.

ListTable. toggle = function (obj, act, id)
{
Var val = (obj. src. match (/yes.gif/I ))? 0: 1;

Var res = Ajax. call (this. url, "act =" + act + "& val =" + val + "& id =" + id, null, "POST", "JSON", false );

If (res. message)
{
Alert (res. message );
}

If (res. error = 0)
{
Obj. src = (res. content> 0 )? 'Images/yes.gif ': 'Images/no.gif ';
}
}

Why is the I of/yes.gif/I used here, and what does ajax. call mean ???



------ Solution --------------------
Ecshop?
Var res = Ajax. call (this. url, "act =" + act + "& val =" + val + "& id =" + id, null, "POST", "JSON", false );
This is a method that has been blocked. it can be seen from the parameters.
This. the url is the request url.
Intermediate act = &...
POST method, return the JSON type
Null and false may be the callback function.

(Obj. src. match (/yes.gif/I ))? 0: 1;
This is a set of three items. check yes.gif in the src object.
/I is case-insensitive and is a regular expression content
If yes.gif exists in src, 0 is returned. otherwise, 1 is returned.