<script language="javascript">

var g = "I'm here";

</script>

<script tpye="text/javascript" src="test.js"></script>

alert(g);

<script tpye="text/javascript" src="test.js?a=1&b=2" id="testjs"></script>

var test = document.getElementById("testjs");

var src = test.getAttribute("src");
var result;
if(src){
　　new RegExp("(^|&)" + name + "=([^&]*)").exec(src);
　　result = RegExp.$2
}
alert(result);

<script tpye="text/javascript" src="test.js">

 var temp = "just test";

</script>

var script = document.getElementsByTagName("script");

eval(script[script.length-1].innerHTML);

alert(temp);

<script id="testScript" type="text/javascript" src="test.js" data="a=b&c=d"></script>

var scriptArgs = document.getElementById('testScript').getAttribute('data');