[英]How to read value from property file using Java Script?
I added textfield and a button in velocity script that is used through a web app. 我在通过Web应用程序使用的速度脚本中添加了文本字段和按钮。 When web app is launched start.properties file is read.
启动Web应用程序时,将读取start.properties文件。 There's a property: debug_on that can take two values 0 or 1.
有一个属性:debug_on,它可以采用两个值0或1。
So I want to display textfield and the button according to debug_on value. 所以我想根据debug_on值显示文本字段和按钮。 It can be done in velocity script via javascript, if I'm not mistaken (I'm not a pro in JavaScript), but I need to get the property value in order to move further.
如果我没有记错的话(我不是JavaScript的专业人士),可以通过javascript在Velocity脚本中完成此操作,但是我需要获取属性值才能继续操作。
How can I achieve it? 我该如何实现?
UPDATED 更新
Velocity script example where main GWT (Java) code is embedded at the end: Velocity脚本示例,最后嵌入了主要的GWT(Java)代码:
<!--doctype head declaration-->
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Web App</title>
<style>
<!-- styles -->
</style>
<link rel="stylesheet" href="/css/webapp.css" type="text/css"/>
<meta name='gwt:module' content='$uri'>
</head>
<body>
<script language="javascript" src="/$uri/com.myproject.gwt.main.nocache.js"></script>
<!-- TextField and button are located here -->
<table style="width: 300px; height: 100px;" class="gwt-DialogBox" cellpadding="0" cellspacing="5">
<!-- some other part of a page tha will be persistent through all GWT pages -->
</table>
</body>
</html>
Velocity runs on the server, JavaScript runs on the client and will not have access to any of the server's files. Velocity在服务器上运行,JavaScript在客户端上运行,并且将无法访问服务器的任何文件。
You can use Velocity to set values within a JavaScript block and have a JS function use those values. 您可以使用Velocity在JavaScript块内设置值,并让JS函数使用这些值。
<script type='text/javascript'>
var startValue = '$debug.value';
</script>
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