Remove null value from a number array

Hello @Shashi,

Thank you very much for your code. I think it works for random selection. But I have one additional issue. After the random selection, I want to match another value based on the selected item. So, my code is like:

var i1=parseInt("${q://QID1/ChoiceTextEntryValue}") || -1;
var i2=parseInt("${q://QID2/ChoiceTextEntryValue}") || -1;
var i3=parseInt("${q://QID3/ChoiceTextEntryValue}") || -1;
var myArray = [i1, i2, i3];
myArray= jQuery.grep(myArray, function(value) {
return value != -1;
});
var randomItem = myArray[Math.floor(Math.random() * myArray.length)];

Qualtrics.SurveyEngine.setEmbeddedData("randomItem", randomItem);

var i4="${q://QID4/ChoiceGroup/SelectedChoices}";
var i5="${q://QID5/ChoiceGroup/SelectedChoices}";
var i6="${q://QID6/ChoiceGroup/SelectedChoices}";

var purpose;

if(randomItem = i1){
purpose = i4;
}
else if(randomItem = i2){
purpose = i5;
}
else{
purpose = i6;
}

Qualtrics.SurveyEngine.setEmbeddedData("purpose", purpose);


Finally, in the survey, I want to say like,
"You selected ${e://Field/randomItem} and your purpose was ${e://Field/purpose}."


But with your code, I can see that random selection works, but the latter matching part does not work.

Could you please give me any suggestions?

Thank you very much.

Thank you, @Shashi.

I tried to change the if statement in the same way you suggested. But finally, I got the result like this:

`if(randomItem == "${q://QID1/ChoiceTextEntryValue}")`