Re: How to pass a variable from Javascript code to Java

[Thiago H. de Paula Figueiredo]

On Sat, Aug 25, 2018 at 3:33 AM marwa hussein <marwa.huss...@gmail.com>
wrote:

> Hello,


Hi!


> I am building a web application and I have to use an open source
> Javascript package that is responsible for the visualization tasks. Now, I
> need to pass a "string variable" from the javascript code to the java
> code?? how to do this in tapestry5 ..Please refer me to a working example
> if you can!!
>

Just use HTML's data attributes, just as Tapestry 5.4+ itself does. For
example, supposing the div below is one which already exists in your page:

<div id="visualization" data-visualization-data="${vizualizationData}">

Then, in your Java code, you compute the visualization data:

public String getVisualizationData() {
    ...
    return data;
}

Then, in your JavaScript, supposing you're using jQuery:

var visualizationData = $('#visualization').attr('visualization-data');

Notice the code above isn't tested. Of course, feel free to adapt it to
your existing code.

-- 
Thiago