JQuery post - how to use a variable to contain my post parameters

Posted on 2009-03-30
Last Modified: 2012-05-06
I'd like to use a function to "build" the parameters I want to send along a $.post

Something like this :

function makePostParm()
var t = '';
var parms = array("id","name");
var vals = array(100,"mark");
   t = t + "," + parms[t] + ":" + vals[t];

function mypost(params)
   $.post("ajax.php", {params} );

var parameter = makePostParm();
mypost( parameter );

Is this at all possible or ??

Question by:trg_dk
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LVL 12

Accepted Solution

alien109 earned 500 total points
ID: 24019441
You should build an actual object, and not a string representation of it. You can do this through a function, or by explicitly setting them using json notation:

var params = {

$.post("ajax.php", params);


function addParam(obj, key, value) {
    obj[key] = value;

var params = {};
addParam(params, "id", 100);
addParam(params, "name", "mark");


$.post("ajax.php", params);
LVL 12

Expert Comment

ID: 24019455
oops. left an extra "}" there at the end, right before the $.post call. That shouldn't be there!

Author Closing Comment

ID: 31564331
I made some minor changes - the function should return obj and the obj should be updated like this :

function addParams(obj,key,value)
obj[key] = value;
return obj;
var params = {};
params = addParams(params,"id",100);

At least that was what worked for me

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