Work with elements from embed or object tag

Answer 1

It will show up as a separate document, similar to an iframe. You can access it like this:

var svg = document.getElementById('graphics').contentDocument

Note that it is important to wait until the svg file is loaded; you might want to put your code in the object element’s onload event handler, like this:

<object data="graphics.svg" type="image/svg+xml" id="graphics" />
<script>
  document.getElementById('graphics').addEventListener('load',function(){
    var svg = document.getElementById('graphics').contentDocument
    // do stuff, call functions, etc.
  })
</script>