[jboss-user] [Beginners Corner] - JBOSS SEAM and JavaScript

[andipesel88]

Hello to everyone!

I'm a bloody Jboss novice - the only thing already now are Java itself and JSP's.
Right now I need to learn JBOSS Seam in connection with hibernate for a school project.

The installation and development of my project is fine, everything works.
But my problem is the following:

I need a javascript on my site. I know that there is the possibility of using AJAX and JSF components, but I've found nothing that matches my need.

I need a counter which counts from e.g. 160 down to 0 in an inputText depending on how many characters the users has written in the textarea.

So I thought that it might work if I put the javascript itself hardcoded onto my site - but it doesn't. There is no error message or anything else that is shown. The JavaSCript itself works fine in a normal HTML site.

So here is my code:

I've a template.xhtml where i puttet the javascript between the header tags:

...
  | <script type="text/javascript">
  | 	
  | 	    <![CDATA[
  | function pruef (chars) {
  | 	var anz=0, len=0,s;
  | 	var msg = document.predefines.predefines:nachr.value;
  | 
  | 	if (!chars) {
  | 		chars = 151;
  | 	}
  | 	for (var i=0; i < msg.length; i++) {
  | 		s = msg.charAt(i);
  | 		if (s=='?' || s=='~' || s=='^' || s=='\\' || s=='{' || s=='}' || s=='[' || s==']' || s=='|') {
  | 			if (anz>(chars-2)) { 
  | 				break
  | 			};
  | 			anz+=2;
  | 		} else if (s=="\r") {
  | 		} else {
  | 			if (anz>(chars-1)) { 
  | 				break 
  | 			};
  | 			anz++;
  | 		}
  | 		len = i+1;
  | 	}
  | 	if (msg.length> len) {
  | 		document.predefines.predefines:nachr.value = msg.substring(0,len);
  | 	}
  | 	document.predefines.predefines:num.value = chars-anz;
  | 	if (navigator.appName =="Netscape" && parseInt(navigator.appVersion) <= 4){
  | 		document.captureEvents(Event.KEYPRESS);
  | 		document.predefines.predefines:nachr.onkeypress = pruef;
  | 	}
  | }
  |      ]]>
  | </script>
  | ...
  | 

and then i just called the function on the site i need:


  | ...
  | <h:form id="predefines">
  | ...
  | <h:panelGroup>
  | 		<h:inputTextarea id="nachr" onkeyup="pruef(160);" cols="50" rows="5"/>
  | 		<h:inputText value="160" id="num" onfocus="this.blur();"/>
  | 	</h:panelGroup>
  | ...
  | </h:form>
  | ...
  | 

I hope you can help me!

andy

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