template.js

// extremely basic templating with replace().

var 

// template
template = '<div id="#{id}">#{text}</div>',
	
// object literal of replacement values
params = { id:10, text:'hi there' },

// html => <div id="10">hi there</div>
html = template.replace(/#\{(.*?)\}/g, function($1, $2){
	return ($2 in params) ? params[$2] : '';
});