Javascript function available in another bootstrap modal

I am using bootstrap modal in my project and I have the following scenario. I have one html page Index.html which contains code to open bootstrap modal on button click using following code.

jQuery('#modellink').click(function(e) {
  $('.modal-container').load(url,function(result){
    $('#myModal').modal({show:true});
  });
});

In the load method URL load dynamically. The issue is that when I load modalbox.html into bootstrap modal which contains test() javascript function. After that when I again load another HTML file modalbox1.html which does not contain any javascript function. Even if **modalbox1.html does not contain any javascript function then also test() javascript function is available since modalbox.html opened previously. So please help me how can I resolved this issue.

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