Get URL Parameters Demo Experiment Run Experiment

Get URL Parameters

Jaap Murre

Illustrates how to send subjects to a different webiste (e.g., a survey in Google Forms). Also shows how to decode any parameters sent from another site with your script (e.g., when using NeuroTask with a proprietary subject management system).

These functions are mainly added for convenience; the Javascript code can easily be found online.

On the basis of this example more complex functions can be developed that allow smooth integration with other web-based testing services and subject management systems.

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/* The following two functions are now in the util library
function getURLParameters(url)
    url = url ||;
    var pars = {};
    url.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(s,k,v) { pars[k]=v; } );
    return pars;

function redirect(url,url_parameters_object)
    var s = url,
        p = url_parameters_object ? $.param(url_parameters_object) : "";
    s = p ? s + "?" + p : s;
    closesession();         // make sure all data has been saved to server
    window.location = s;

// Example URL from google
var s = "";

var obj = util.getURLParameters(s); // {q: 'neurotask'}
console.log("URL Object: ",obj);

text("Press spacebar to be redirected");
awaitkey(' ');

//redirect to" with search parameters in obj

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