Function formateString

设计模式学习/行为设计模式/模板方法模式/Nav.js:1–5

(str, data)

function formateString(str, data){
	return str.replace(/\{#(\w+)#\}/g, function(match, key){
		return typeof data[key] === undefined ? '' : data[key]
	});
}

var Nav = function (data){
	this.item = '<a href ="{#href#}" title="{#title#}">{#name#}</a>';