Question

How to pass a data (ex userid ) from one page to another page in blackberry 10 qml ?

Answer 1

You can either create property on target page or create a java script function to do so. If you want to validate or perform any other operation before assigning you should use java script function.

Page {
    //targetPage

    property string userid //you can also use alias here

    function initialize(id) {
        userid = id
        //you can also set property of controls here
    }
}

Call it on your page like this

targetPageid.userid = "user id"

OR

targetPageid.initialize("user id")