should every scripted file inclode $(document).ready();

should every scripted file inclode $(document).ready();

i know what is $(document).ready $(window).load

my case is like this

<script type="text/javascript" src="scripts/jq.js"></script>
<script type="text/javascript">
//some code
</script>

i am into splitting my code into files so

<script type="text/javascript" src="scripts/jq.js"></script>
<script type="text/javascript" src="...."></script> <!--file1-->
<script type="text/javascript" src="...."></script> <!--file2-->

?should file one and two have $(function(){});