I'm trying to pass boolean variables from the server to the client in AJAX. I found this solution on stackoverflow:
You want to distinguish between "real" booleans and the texts "true" and "false"?
Well - an attribute might help you - e.g. IsActive.
For "text":
<problem>false</problem>For booleans:
<problem IsActive="false"></problem>
Now my question is simple: how do I read back the IsActive attribute in javascript? I'd imagine it would be something along the lines of:
var problem = xmlResponse.getElementsByTagName("problem")[0];
var IsActive = problem.getAttribute("IsActive");
but what's the exact code for getting that to work?
Much obliged.
If you're using XML, use what's called a boolean attribute, true is when the attribute exists, and false is when it doesn't exist. I assume you're not using any JS libs like jQuery or prototype.
You can then simply use the hasAttribute method on the dom node:
XML
<problem IsActive>foo</problem>
-or-
<problem IsActive="IsActive">foo</problem>
JS
var problem = xmlResponse.getElementsByTagName('problem')[0];
var IsActive = problem.hasAttribute('IsActive');
AFAIK most "AJAX" these days uses JSON, which makes data passing significantly easier.