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Javascript: Default choices on multiple (!) dropdown answers in Matrix Table
Hi all,
I am trying to select default answers based on embedded data. The problem I have is two-fold:
First, and most importantly: I cannot figure out how to select different values for several different drop-down options in the same Matrix Table.
I found the following online, which lets me select the SAME answer on all dropdowns in the same question (in this example, the second from the bottom):
if($('QID17')) {$$('#QID17 select').each(function(s){ s.value = (s[s.length-2].value); }) }
But how do I adapt this to select different answers for the different drop-downs?
Second, my current JavaScript is long, using "IF embeddeddataX = 1 THEN set answer to 1, IF embeddeddataX = 2 THEN set answer to 2, ..."
I am looking for a more elegant way to use the numeric value from embedded data to set the answer choice.
Any help is appreciated!
Best answer by Rich_Boits_Walker
Here is a simple example of what I mean using embedded data fields statement1 and statement2 that are set before the matrix question block.
Qualtrics.SurveyEngine.addOnload(function()
{
var selectedPunch1 = parseInt("${e://Field/statement1}");
var selectedPunch2 = parseInt("${e://Field/statement2}");
// matrix table arguements are (row,value,'true')
// selects punch in a matrix table (row_#_in_matrix_table,punch_from_var,'true')
this.setChoiceValueByRecodeValue(1,selectedPunch1,'true');
this.setChoiceValueByRecodeValue(2,selectedPunch2,'true');
});
Note that I added parseInt around the embedded data to workaround the piped text call's double slash which is a comment in javascript.
View original
+7I've used the setChoiceValueByRecodeValue method documented in the link below. The documentation is describing it's use for a single select, but it can be tweaked to work with a matrix table by passing row in. This works for all four answer types in the matrix table (single, multiple, dropdown, and drag & drop).
`setChoiceValueByRecodeValue(row,value,'true')`
https://s.qualtrics.com/WRAPI/QuestionAPI/classes/Qualtrics%20JavaScript%20Question%20API.html#method_setChoiceValueByRecodeValue
+7Here is a simple example of what I mean using embedded data fields statement1 and statement2 that are set before the matrix question block.
Qualtrics.SurveyEngine.addOnload(function()
{
var selectedPunch1 = parseInt("${e://Field/statement1}");
var selectedPunch2 = parseInt("${e://Field/statement2}");
// matrix table arguements are (row,value,'true')
// selects punch in a matrix table (row_#_in_matrix_table,punch_from_var,'true')
this.setChoiceValueByRecodeValue(1,selectedPunch1,'true');
this.setChoiceValueByRecodeValue(2,selectedPunch2,'true');
});
Note that I added parseInt around the embedded data to workaround the piped text call's double slash which is a comment in javascript.
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