如何在父窗口中从其调用方获取iFrame的引用

Question

I have javascript module like below in my main page.

var LX = (function () {
    this.print_msg(divID){
        document.getElementById(divID).innerHTML = "some computed message";
        //above line throw error : TypeError: document.getElementById(...) is null
    }
    // some others functions
    retrun this;

})(); 

There are many iframes dynamically created in this page. code in all iFrame as below

<div id="msgDiv"></div>
<script>
LX = parent.LX ;
LX.print_msg("msgDiv");
</script>

my problem is How to get reference of iFrame from its caller in parent window ??

Answer 1

If the msgDiv is in the iframe, you need to pass window too. For example LX.print_msg(window,"msgDiv"); and use

this.print_msg(win,divID){ win.document.getElementById(divID).innerHTML = "some computed message";