nodejs express template (模版)的使用 (ejs + express)

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var app=require("express").createServer();                                                                                                                                                                                                                                                                                                                                                                                      app.set("view engine","ejs");                                                                                                                                                                                                                                                                                                                                                                                      app.get("/",function(req,res){                                                                                                                                res.render("index",{"title":"test"});                                                                                                                            });                                                                                                                                                                                                                                                                                                                                                                                      app.listen(3000);

1、上面是express使用模版的一個基本例子

app.set("view engine","ejs"); 這句將模版引擎設定為 ejs （http://github.com/visionmedia/ejs）

ejs可通過 npm install ejs 來進行安裝

2、在app.get中。

res.render("index",{"title":"test"}); 會執行2個步驟。

1. 會讀取 ./views/index.ejs檔案的內容，然後將其中的title變數替換為test,例如<%=title%>會變為test。假設返回的內容為content1

2. 接著，會讀取./views/layout.ejs，並將其中的body變數替換為content1，例如<%=body%>會變為content1的內容。

3、在2中，如果不願意使用預設的layout.ejs，可自行指定。例如：

1	res.render("index",{"title":"test","layout":"main"});

或

1	res.render("index",{"title":"test","layout":"main.ejs"});

4、如果不願意使用layout，則可以設定layout為false，例如:

1	res.render("index",{"layout":false});

5、如果不想每個請求都單獨設定一次。可以使用全域設定：

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app.set("view options",{                                                                                                                                                                                                                                                                                    "layout":false                                                                                                                                                                                      });

6、ejs 裡，預設的閉合標記是 <%  .. %>，我們也可以定義自己的標籤。例如：

1234	app.set("view options",{                                                                                     "open":"{{",                                                                                     "close":"}}"});

nodejs express template (模版)的使用 (ejs + express)