Load iFrame and print it

I have an ASPX page with hidden iframe.
I'm trying to: on button click load another page into that hidden iFrame and print it's content:

$("#shareButtonPrint").click(function () {
        $("#PrintFrame").attr('src', '/ProtocolPrintPage.aspx?g=1');
        $("#PrintFrame").ready(function () {
            window.frames['PrintFrame'].print();
        });

    });

but the code above doesn't work.

It works only when I load the iframe on main page load:

$("#PrintFrame").attr('src', '/ProtocolPrintPage.aspx?g=1');
    $("#shareButtonPrint").click(function () {
        //$("#PrintFrame").attr('src', '/ProtocolPrintPage.aspx?g=1');
        window.frames['PrintFrame'].print();
    });

How can I load the iframe on button click ?

This is likely due to the iframe not yet being loaded when you're trying to print it

Perhaps try using load instead of ready

Check out my example here

http://jsfiddle.net/andyw_/umYkV/451/

Only tested in latest chrome + IE8-10.

Also note that load is deprecated

http://api.jquery.com/category/deprecated/

The new way of doing it is on('load', fn)

<button id='click'>click me</button>

<iframe style="display:none" id='toPrint' src='' /></iframe>


$(function(){        
    $('#click').on('click', function(){
        $('#toPrint').attr('src', 'https://fiddle.jshell.net/doiks14/umYkV/451/show/');
        $('#toPrint').load(function() {
            console.log(window.frames['toPrint']);
            try {
                window.frames['toPrint'].print();
            } catch (e) {
                console.log(e);
                try {
                    window.frames['toPrint'].contentWindow.print();
                } catch (e) {
                    console.log(e);
                }
            }
            
        });
    });
});