+2I wrote a JavaScript to randomly draw 2 numbers in a question with some constraints. The script works when I select the question box and click “Preview Question”, as shown below
but it does not function properly when I click preview for the survey, as shown below
Here is the code I wrote. Could anyone tell me why this issue occurs and provide some guidance? I would really appreciate your help! Thanks a lot in advance!!!
Best answer by Chee Heng_SZ
Hi
I am not very knowledgeable on JavaScript. I used the piped text of the form field question instead.
Then, i realised that they are concatenating when I tried to add them.
Hence, I changed the data type of value1 and random1, which are likely string type, to numbers before adding them.
Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/
const random1options=[0,2,4,6];
const random2options=[0,20,30,40];
let random1=random1options[Math.floor(Math.random() * random1options.length)];
let random2=random2options[Math.floor(Math.random() * random2options.length)];
while (random1 === 0 && random2 ===0) {
random1=random1options[Math.floor(Math.random() * random1options.length)];
random2=random2options[Math.floor(Math.random() * random2options.length)];
}
/*For checking data in console. To delete if you do not require this line.*/
console.log("Random1: " +random1);
/*Getting the 2nd input of the form field question. Do remember to change the QID to suit your case*/
let value1= "${q://QID20/ChoiceTextEntryValue/2}";
/*Changing the format of the value1 and random1 from string to number.*/
let sum= Number(value1)+ Number(random1);
/*For checking data in console. To delete if you do not require these two lines.*/
console.log("value1: " +value1);
console.log("sum: " +sum);
this.getQuestionTextContainer().innerHTML="xx increase by " + sum +" and xx increase by "+random2 +"%, which of the following you will choose?";
});
+16Try changing the portion from ` to “” instead?
this.getQuestionTextContainer().innerHTML=
"xx increase by " + random1 +" and xx increase by "+random2 +" %, which of the following you will choose?";
+2Try changing the portion from ` to “” instead?
this.getQuestionTextContainer().innerHTML=
"xx increase by " + random1 +" and xx increase by "+random2 +" %, which of the following you will choose?";
Now I want to retrieve the value that participants enter in the previous question, question type is form field with two input fields. I want to extract the value from the second field and add this number to random 1, and use the sum to display in the question. I tried the following code, but it doesn’t work, would you be kind enough to provide some guidance again?
Many thanks for your help in advance!!!
+16Hi
I am not very knowledgeable on JavaScript. I used the piped text of the form field question instead.
Then, i realised that they are concatenating when I tried to add them.
Hence, I changed the data type of value1 and random1, which are likely string type, to numbers before adding them.
Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/
const random1options=[0,2,4,6];
const random2options=[0,20,30,40];
let random1=random1options[Math.floor(Math.random() * random1options.length)];
let random2=random2options[Math.floor(Math.random() * random2options.length)];
while (random1 === 0 && random2 ===0) {
random1=random1options[Math.floor(Math.random() * random1options.length)];
random2=random2options[Math.floor(Math.random() * random2options.length)];
}
/*For checking data in console. To delete if you do not require this line.*/
console.log("Random1: " +random1);
/*Getting the 2nd input of the form field question. Do remember to change the QID to suit your case*/
let value1= "${q://QID20/ChoiceTextEntryValue/2}";
/*Changing the format of the value1 and random1 from string to number.*/
let sum= Number(value1)+ Number(random1);
/*For checking data in console. To delete if you do not require these two lines.*/
console.log("value1: " +value1);
console.log("sum: " +sum);
this.getQuestionTextContainer().innerHTML="xx increase by " + sum +" and xx increase by "+random2 +"%, which of the following you will choose?";
});
+2Hi
I am not very knowledgeable on JavaScript. I used the piped text of the form field question instead.
Then, i realised that they are concatenating when I tried to add them.
Hence, I changed the data type of value1 and random1, which are likely string type, to numbers before adding them.
Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/
const random1options=[0,2,4,6];
const random2options=[0,20,30,40];
let random1=random1options[Math.floor(Math.random() * random1options.length)];
let random2=random2options[Math.floor(Math.random() * random2options.length)];
while (random1 === 0 && random2 ===0) {
random1=random1options[Math.floor(Math.random() * random1options.length)];
random2=random2options[Math.floor(Math.random() * random2options.length)];
}
/*For checking data in console. To delete if you do not require this line.*/
console.log("Random1: " +random1);
/*Getting the 2nd input of the form field question. Do remember to change the QID to suit your case*/
let value1= "${q://QID20/ChoiceTextEntryValue/2}";
/*Changing the format of the value1 and random1 from string to number.*/
let sum= Number(value1)+ Number(random1);
/*For checking data in console. To delete if you do not require these two lines.*/
console.log("value1: " +value1);
console.log("sum: " +sum);
this.getQuestionTextContainer().innerHTML="xx increase by " + sum +" and xx increase by "+random2 +"%, which of the following you will choose?";
});
Again, it works! Thank you so much for your help
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