javascript - How to get index (or value) of DropDownButton selection -

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i have downdownbutton i've populated array containing project names , ids. list shows project name, i'd project id. variable "projects" looks this:

[object { name="project a", id="1325"}, object { name="project b", id="5241"}, object { name="project c", id="3224"}]

this code creates menuitem button correctly, how set variable projid in onclick event? 

for (i = 0; < projects.length; i++) {     menuprojects.addchild(new menuitem({         label: projects[i].name,         onclick: function () {             projid = ?;         }    })); }

i've tried using "projid= projects[i].id;", gives me error since 3. what's correct syntax this?

-- edit --

this how got work using both cookie's , merrick's answers.

for (i = 0; < projects.length; i++)     (function (x) {         menuprojects.addchild(new menuitem({             label: projects[i].name,             onclick: function () {                 projid = projects[x].id;             }         }));     } (i));

i don't know if correct/best way it, create closure give each iteration new variable scope so:

for (i = 0; < projects.length; i++) {     (function(x) {         menuprojects.addchild(new menuitem({             label: projects[i].name,             onclick: function () {                 projid = x;             }        }));     }(i));  }

this creates anonymous function (with own scope) immediatly evaluated.


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