AppML 数据
AppML 的 **主要** 目的在于为 HTML 页面提供 **数据**。
连接 AppML 到数据
- AppML 可以显示来自变量的数据
- AppML 可以显示来自文件的数据
- AppML 可以显示来自数据库的数据
AppML 使用 JavaScript 对象
分离 HTML 和数据的一种常见方法是将数据存储在 JavaScript 对象中。
示例
<table appml-data="dataObj">
<tr>
<th>客户</th>
<th>城市</th>
<th>国家</th>
</tr>
<tr appml-repeat="records">
<td>{{CustomerName}}</td>
<td>{{City}}</td>
<td>{{Country}}</td>
</tr>
</table>
<script>
var dataObj = {
"records":[
{"CustomerName":"Alfreds Futterkiste","City":"Berlin","Country":"Germany"},
{"CustomerName":"Ana Trujillo Emparedados y helados","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Antonio Moreno Taquería","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Around the Horn","City":"London","Country":"UK"},
{"CustomerName":"B's Beverages","City":"London","Country":"UK"},
{"CustomerName":"Berglunds snabbköp","City":"Luleå","Country":"Sweden"},
{"CustomerName":"Blauer See Delikatessen","City":"Mannheim","Country":"Germany"},
{"CustomerName":"Blondel père et fils","City":"Strasbourg","Country":"France"},
{"CustomerName":"Bólido Comidas preparadas","City":"Madrid","Country":"Spain"},
{"CustomerName":"Bon app'","City":"Marseille","Country":"France"},
{"CustomerName":"Bottom-Dollar Marketse","City":"Tsawassen","Country":"Canada"},
{"CustomerName":"Cactus Comidas para llevar","City":"Buenos Aires","Country":"Argentina"},
{"CustomerName":"Centro comercial Moctezuma","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Chop-suey Chinese","City":"Bern","Country":"Switzerland"},
{"CustomerName":"Comércio Mineiro","City":"São Paulo","Country":"Brazil"}
]};
</script>
自己试试 »
AppML 使用 JSON 文件
另一种分离 HTML 和数据的方法是将数据存储在 JSON 文件中。
customers.js
{
"records":[
{"CustomerName":"Alfreds Futterkiste","City":"Berlin","Country":"Germany"},
{"CustomerName":"Ana Trujillo Emparedados y helados","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Antonio Moreno Taquería","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Around the Horn","City":"London","Country":"UK"},
{"CustomerName":"B's Beverages","City":"London","Country":"UK"},
{"CustomerName":"Berglunds snabbköp","City":"Luleå","Country":"Sweden"},
{"CustomerName":"Blauer See Delikatessen","City":"Mannheim","Country":"Germany"},
{"CustomerName":"Blondel père et fils","City":"Strasbourg","Country":"France"},
{"CustomerName":"Bólido Comidas preparadas","City":"Madrid","Country":"Spain"},
{"CustomerName":"Bon app'","City":"Marseille","Country":"France"},
{"CustomerName":"Bottom-Dollar Marketse","City":"Tsawassen","Country":"Canada"},
{"CustomerName":"Cactus Comidas para llevar","City":"Buenos Aires","Country":"Argentina"},
{"CustomerName":"Centro comercial Moctezuma","City":"México D.F.","Country":"Mexico"},
{"CustomerName":"Chop-suey Chinese","City":"Bern","Country":"Switzerland"},
{"CustomerName":"Comércio Mineiro","City":"São Paulo","Country":"Brazil"}
]
}
使用 AppML，您可以在 appml-data 属性中将 JSON 文件指定为数据源。
示例
<table appml-data="customers.js">
<tr>
<th>客户</th>
<th>城市</th>
<th>国家</th>
</tr>
<tr appml-repeat="records">
<td>{{CustomerName}}</td>
<td>{{City}}</td>
<td>{{Country}}</td>
</tr>
</table>
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AppML 使用数据库
借助一点 Web 服务器的帮助，您可以为您的应用程序提供 SQL 数据。
此示例使用 PHP 从 MySQL 数据库读取数据。
示例
<table appml-data="https://w3schools.org.cn/appml/customers.php">
<tr>
<th>客户</th>
<th>城市</th>
<th>国家</th>
</tr>
<tr appml-repeat="records">
<td>{{CustomerName}}</td>
<td>{{City}}</td>
<td>{{Country}}</td>
</tr>
</table>
自己试试 »
AppML 的强大功能
您即将发现 AppML 的强大功能。
AppML 可以为您提供用于
- 超级简单的 HTML 应用程序开发
- 超级简单的建模、原型设计和测试
您可以在一个 HTML 页面中放入任意多个 AppML 应用程序。
AppML 不会干扰页面的其他部分。
您拥有完全的 HTML、CSS 和 JavaScript 自由。
AppML 可用于开发全规模的 CRUD Web 应用程序。
CRUD：Create（创建）、Read（读取）、Update（更新）、Delete（删除）。
要发现 AppML 的强大功能：查看 AppML 演示。
