Import plotly.js as:
<script type="text/javascript" src="plotly.min.js"></script>To support IE9, import plotly.js as:
<script>if(typeof window.Int16Array !== 'function')document.write("<scri"+"pt src='extras/typedarray.min.js'></scr"+"ipt>");</script>
<script type="text/javascript" src="plotly.min.js"></script>