express.js render的模板里 配置如下

 app.configure(function () {   
app.set('view engine', 'html');   
app.set('views', path.join(__dirname, 'views'));   
app.register('.html', require('ejs'));   
app.use(express.bodyParser({
        uploadDir: config.upload_dir,
        keepExtensions: true,
        limit: 10000000, 
        defer: true  //enable event    }));

render的函数调用 res.render('topic/edit', {tags: tags, topic_type:'话题'});

想调用如下函数，显然需要load完成之后才能调用？ 能否/应该如何在html模板中调用下列函数呢？

    function dynamicview()   
{
 if (!locals.topic_type ||locals.topic_type=='话题')
    {
  document.getElementById("needDiv").style.display="none";
 document.getElementById("maxnumber").style.display="compact";
document.getElementById('type_0').checked = true;
    }
    else if(locals.topic_type=='发送')
  {
..............
}