Why can't I roll a loop in Javascript?
- by Carl Manaster
I am working on a web page that uses dojo and has a number (6 in my test case, but variable in general) of project widgets on it. I'm invoking dojo.addOnLoad(init), and in my init() function I have these lines:
dojo.connect(dijit.byId("project" + 0).InputNode, "onChange", function() {makeMatch(0);});
dojo.connect(dijit.byId("project" + 1).InputNode, "onChange", function() {makeMatch(1);});
dojo.connect(dijit.byId("project" + 2).InputNode, "onChange", function() {makeMatch(2);});
dojo.connect(dijit.byId("project" + 3).InputNode, "onChange", function() {makeMatch(3);});
dojo.connect(dijit.byId("project" + 4).InputNode, "onChange", function() {makeMatch(4);});
dojo.connect(dijit.byId("project" + 5).InputNode, "onChange", function() {makeMatch(5);});
and change events for my project widgets properly invoke the makeMatch function. But if I replace them with a loop:
for (var i = 0; i < 6; i++)
dojo.connect(dijit.byId("project" + i).InputNode, "onChange", function() {makeMatch(i);});
same makeMatch() function, same init() invocation, same everything else - just rolling my calls up into a loop - the makeMatch function is never called; the objects are not wired.
What's going on, and how do I fix it? I've tried using dojo.query, but its behavior is the same as the for loop case.
