Difference between revisions of "Force number of characters"
(New page: == Challenge == You want to use automatically change question, but don't want to show the counter for the respondent. The Next button is often hided when this script is used. == Script ==...) |
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| Line 1: | Line 1: | ||
== Challenge == | == Challenge == | ||
| − | You want to | + | You want to force the respondent to write a certain number of characters in a text sub question. The script is often used together with the Number grid script, to force the respondent to write a zip code, or a phone number in a certain text field |
| + | == Example == | ||
| + | [[Image:ValidateTextLength.JPG ]] | ||
== Script == | == Script == | ||
<source lang="javascript" line="1"> | <source lang="javascript" line="1"> | ||
| − | function | + | var normalQuestionCheck = questioncheck; |
| − | { | + | function extendedQuestionCheck() |
| − | document["query"][" | + | { |
| − | + | var valid = normalQuestionCheck(); | |
| + | if (valid) | ||
| + | { | ||
| + | // var_a hold the respondents answer. | ||
| + | var var_a; | ||
| + | // This is where the index of your sub question is defines. | ||
| + | // The code below is that we use sub question has index 0 | ||
| + | var_a = document["query"][quest.label + "." + 0].value; | ||
| + | if (var_a.length > 0) | ||
| + | { | ||
| + | if (var_a.length != 10) | ||
| + | { | ||
| + | alert('The field can only hold 10 characters.'); | ||
| + | return false; | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | if (!valid) | ||
| + | { | ||
| + | alert('Please correct your answer.'); | ||
| + | return false; | ||
| + | } | ||
| + | return true; | ||
} | } | ||
| − | + | questioncheck = extendedQuestionCheck; | |
| − | |||
</source> | </source> | ||
Revision as of 10:54, 2 March 2009
Challenge
You want to force the respondent to write a certain number of characters in a text sub question. The script is often used together with the Number grid script, to force the respondent to write a zip code, or a phone number in a certain text field
Example
Script
1 var normalQuestionCheck = questioncheck;
2 function extendedQuestionCheck()
3 {
4 var valid = normalQuestionCheck();
5 if (valid)
6 {
7 // var_a hold the respondents answer.
8 var var_a;
9 // This is where the index of your sub question is defines.
10 // The code below is that we use sub question has index 0
11 var_a = document["query"][quest.label + "." + 0].value;
12 if (var_a.length > 0)
13 {
14 if (var_a.length != 10)
15 {
16 alert('The field can only hold 10 characters.');
17 return false;
18 }
19 }
20 }
21 if (!valid)
22 {
23 alert('Please correct your answer.');
24 return false;
25 }
26 return true;
27 }
28 questioncheck = extendedQuestionCheck;
