25-Node.js学习笔记-express-app.locals对象

app.locals对象

将变量设置到app.locals对象下面，这个数据在所有的模板中都可以获取到

```
app.locals.users=[{
name:'柠檬不酸',
age:20
},{
name:'西瓜很甜，
age:18
}]
```
demo
```
//引入express框架
const express = require('express');
const path = require('path')
//创建网站服务器
const app = express();
app.engine('art',require('express-art-template'));
app.set('views',path.join(__dirname,'views'))
app.set('view engine','art');

app.locals.users = [{

name:'柠檬不酸',

age:18

},{

name:'柠檬不酸le',

age:19

}]

app.get('/index',(req,res)=>{

res.render('index',{

msg:'首页'

})

})

app.get('/list',(req,res)=>{

res.render('list',{

msg:'列表页'

})

})

//监听端口

app.listen(3000);

console.log('网站服务器启动成功');

//views/index.art

{{msg}}

{{each users}}
• {{$value.name}}
  {{$value.age}}

{{/each}}

```
```
//views/list.art
{{msg}}

{{each users}}
• {{$value.name}}
  {{$value.age}}

{{/each}}

```