iframe do not work in Firefox

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C#

VB

ASP.NET

Javascript

Hi guys,

I am used iframe as textarea in ASP.net website,

but it do not work with firefox as i cann't enter the pointer inside it unless i write some text in it in page load

that is my javascript code where i must write some text like "any thing" with page load to work it with firefox

<script type="text/javascript">
                    
                    function populateIframe(iFrameId, text)
                    {
                        var iframe = document.getElementById(iFrameId);
                        var doc;

                        if (iframe.contentDocument)
                        {
                            doc = iframe.contentDocument;
                        }
                        else
                        {
                            doc = iframe.contentWindow.document;
                        }
                        
                        doc.write(text);
                    }
                    
                    var hdhiddenfieldValue = document.getElementById('<%=hdSaveHtml.ClientID %>').value;
                    
                    if(hdhiddenfieldValue=="")
                    {
                        hdhiddenfieldValue = "any thing";
                    }
                    
                    populateIframe('wysiwyg', hdhiddenfieldValue);
                </script>