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javascriptjqueryfunctionwindow

call parent window function in child window javascript

Hi I want to run function from parent window in child window

But the following code does not work

index.php

//set status message
function setStatus($html){
    $("#data").html($html);
    }

//twitter login page handler
function twitter(){
    win = window.open('twit.php','win',"width=882,height=750,toolbar=0");
    setStatus('proccess...');
    }

//close window
 function closeWin(){
    win.close();
    }

//open new window
$(".twitterBtn").click(twitter);

twit.php

<script language="javascript" type="text/javascript">
window.opener.setStatus('Login with Twitter!');
window.opener.closeWin();
</script>

My problem with window.opener, It does not work

Please suggest a way that will work in all browsers and does not conflict with other codes

Thank you

Solution

  • Ok, it took a while but I have a working example.

    I use postMessage for the information exchange, however, it is only needed for letting the child know its parent.. but I extended the example to a parent-child chat. Have fun:

    <html>
<head>
    <script>
        window.addEventListener("load",init,false);
        window.addEventListener("message",message,false); //register postMessages

        //we need this because master(original) and slave(=window.open) must do different actions
        var isSlave=window.location.href.indexOf("slave=true")>0

        //the other-window (in the slave, this is undefined, until the handshake is complete
        var popupwindow;
        if (!isSlave){
            popupwindow=window.open(window.location.href+"?slave=true", "_blank",'toolbar=0,location=0,menubar=0'); 
        }

        // this is called from the child window, after handshake
        function test(){
            var listElem = document.createElement('li');
            listElem.innerHTML="handshake succesful!!!!!";
            document.querySelector("ul").appendChild(listElem);
        }

        function init(){
            document.querySelector("button").addEventListener("click",function(){
                        ////popupwindow.test(); //note this works only if same origin policy allows this, else use postMessages

                //here we send the message to the other window
                popupwindow.postMessage(document.querySelector("#inp").value,"*");
            },false);


            //the timetrigger is needed, because opening and initializing the new window takes time, then we perform a handshake to let the new window know his origin
            setTimeout(function(){
            if(!isSlave)
                popupwindow.postMessage("handshake successful","*");//handsake needed for bidirectional conneciton  
            },200);


        }


        //called when receiving a message
        function message(data){

            //needed for bidirectional message
            if (!popupwindow){
                popupwindow=data.source;
                //popupwindow.postMessage("handshake successful","*"); //send the handshake back to the origin (notification purpose only) //instead, we do test()
                popupwindow.test();
            }

            //display the message
            var listElem = document.createElement('li');
            listElem.innerHTML=data.data;
            document.querySelector("ul").appendChild(listElem);


        }
    </script>
</head>

<body>
    <button>say hello</button>
    <input type="text" id="inp" />
    <ul></ul>
</body>
</html>