Performing randomization using JavaScript on Qualtrics -


i have around 1000+images , want perform randomization on these images on qualtrics such 1 image appears whenever takes survey. guide me through not have background in java script.

i have prepared following code, code consist of image id's in array. function random generates random number based on total number of image id's in array. number use select 1 image out of array. image appended web link. however, not sure logic of code correct or not. helpful if take @ this, new java scripting 

qualtrics.surveyengine.addonload(function()  {var currentquestionid = this.getquestioninfo().questionid;   var arr1=[im_aggu9te6ep0pjn3,im_79zbxlcrr1irxnz,im_2i5fytch,im_5uxw4ird0tmupmt,im_5dnomsomydrvboj]  function randomimage()   {     var idx = math.floor(math.random()*max_plus_one);      return images[idx]; };  var image1 = randomimage();  image1.style.display = 'https://az1.qualtrics.com/controlpanel/graphic.php?im= 'imgae1

since don't have background in javascript, can avoid using qualtrics randomizer in survey flow:

randomizer (select 1 of following, evenly distribute) - embedded data block: image = image1url - embedded data block: image = image2url - embedded data block: image = image3url - etc.

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