passing java-script value to java-bean-property

[nimo frey]

how can I transfer the ivalue of a java-script to a java-bean-property?

This java-script returns me a ivalue:

alert(myJsValue);

I need to pass the value of myJsValue to a java-bean-property. How can I do that?

[Bertjan Underhill]

Hello,

To set a javascript property with a java bean property:

<script language="JavaScript" type="text/javascript">
var test = <h:outputText value="#{formBean.searchValue}" />;
</script>

To set a java bean property with a javascript property you can try this:

In your JSP you have to following line:

<h:outputText id="test" value="#{formBean.searchValue}" />

Then set with javascript your myJsValue:

<script language="JavaScript" type="text/javascript">
document.getElementById("test").value = myJsValue;
</script>

I hope it will work.

[prash patil]

Just to add more on it ..
You can send any value form JavaScrip to Java or vice versa using DWR. Direct Web Remoting a easy AJAX for java.
:-)

Regards
PP.

[rashmi coorg]

 

Bertjan Underhill wrote:Hello,

To set a javascript property with a java bean property:

<script language="JavaScript" type="text/javascript">
var test = <h:outputText value="#{formBean.searchValue}" />;
</script>

To set a java bean property with a javascript property you can try this:

In your JSP you have to following line:

<h:outputText id="test" value="#{formBean.searchValue}" />

Then set with javascript your myJsValue:

<script language="JavaScript" type="text/javascript">
document.getElementById("test").value = myJsValue;
</script>

I hope it will work.

this is not working for me... any suggestions y?

[Tim Holloway]

The only way JavaScript can set a backing bean property is by making a request to the server, since that's where the backing bean lives. That means that the client must make an HTTP URL request to the server. The brute-force way of doing that would be to set a form control property (you can use a hidden text control) and pass the value in when the form is submitted.

A more elegant approach that avoids the need to submit and re-render the entire page is to do an AJAX request. That can be done in a number of ways, including:

1. brute-force javascript
2. Using an AJAX support javascript library like dojo or jQuery
3. Using the JSF2 AJAX support features
4. Using third-party JSF AJAX support packages such as RichFaces or IceFaces.