get iframe dom using jquery

index.html

<iframe onload={()=>{
                    setTimeout(()=>{
                        // console.log(.html());
                    },1000);
                    $.when($('#framenya').contents().find('html')).then((dom)=>{
                        var waitForEl = function(selector, callback) {
                            if (dom.find(selector).length) {
                                setTimeout(function() {
                                    callback();
                                }, 1000);
                            } else {
                                setTimeout(function() {
                                    console.log('waiting');
                                    waitForEl(selector, callback);
                                }, 1000);
                            }
                        };
                        waitForEl(".the-key-is-loaded", () => {
                            console.log(dom.html())
                            console.log('loadeddddddddddddd');
                        });
                    })
                    
                }} id="framenya" src="http://artywiz.local/prerender/1160?logo_part=black-icon-title-slogan.png" frameborder="0" ></iframe>