output plotly HTML to cell for copy pasting

output plotly HTML to cell for copy pasting.js

%%javascript
//remember to append <script src="https://cdn.plot.ly/plotly-1.2.0.min.js"></script> to head or top of body.
//output_subarea output_html rendered_html
let index = 0; //or whatever is the number of the graph.
//$('.plotly-graph-div').map((i,el) => element.append('<p>'+$(el).attr('id')+'</p>'))
let chart = $('.plotly-graph-div').eq(index).parent();
/// optionally one could change the dimensions for the .plotly-graph-div and svg elements.
//chart.children('.plotly-graph-div').css('height','525px');
//chart.children('.plotly-graph-div').css('width','100%');
let codeEl = $('<pre id="plotText"><code></code></pre>');
let code = chart
            .html()
            .replace('\n});<\/script>','</script>')
            .replace('require(["plotly"], function(Plotly) { window.PLOTLYENV=window.PLOTLYENV || {};window.PLOTLYENV.BASE_URL="https://plot.ly";','');
//            .replace(/\>\</gm,'>\n<');

codeEl.children('code').text(code);
element.html(codeEl);