使用javasciprt自定义函数同样可以引用js文件

function getJSM(f)
{
var reg = /\/(\w+)\./;
jF = f.match(reg);
return jF[jF.length-1];
}

function loadJS(js)
{
id = getJSM(js);
var scriptId = document.getElementById(id);
var head = document.getElementsByTagName('head').item(0);
if(scriptId==null)
{
script  = document.createElement('script');
script.src = js;
script.type = 'text/javascript';
script.id = id;
head.appendChild(script);
}
}

//举例

<script type="text/javascript" charset="UTF-8">
loadJS("../js/googleMap.js");
loadJS("../js/51Map.js");
</script>[/code]