With Efw,it is easily to start web programming if you know Javascript & JQuery.
Create a file with the next codes, and name it as "helloworld.jsp" in your web application folder "efw".<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="efw" uri="efw" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Hello World</title>
<efw:Client/>
</head>
<body>
<input type=text id="txtMessage">
<input type=button value="Send" onclick="Efw('helloWorld_sendMessage')">
<fieldset><legend>Messages</legend></fieldset>
</body>
You will see the next image, if you call it from a web browser by the url http://localhost:8080/efw/helloworld.jsp .
you will see an error, if you click the "Send" button before you complete the next step.
var helloWorld_sendMessage={};
helloWorld_sendMessage.paramsFormat={
"#txtMessage":"required:true;display-name:the input message"
};
helloWorld_sendMessage.fire=function(params){
return (new Result())
.runat("body")
.withdata({"#txtMessage":""})
.runat("fieldset")
.append("<span>{message}<br></span>")
.withdata([{"message":params["#txtMessage"]}]);
};
The entering in the input messsage will be moved into the messsages, after you click the "Send" button.
You will see an alert and a hightlight, if you click the "Send" button without entering.
