I'd like to be able to manipulate a flow variable in a template in a
node-red flow.
In particular, the template is an HTML document, and in its body are a
couple of lines:
<div><button type="button" onclick='doIt("1");'>LR</button><span id="LR"
> LR data </span> </div>
<div><button type="button" onclick='doIt("2");'>BR</button><span id="BR"
> BR data </span> </div>
that set up two buttons next to some data for a couple of rooms. The intent
is that to see more information about one of these rooms, the user presses
the corresponding button. Which button was pressed is communicated using a
flow variable.
What I've tried is defining
function doIt(m) { flow.set('showMe',m); }
This fails -- and depending on how and where I try it, it can prevent the
entire web page from loading. However,
(1) A similar line of code in a node-red function works just fine.
(2) The invocation of the doIt() function on pressing the button works. I
can substitute alert("blah blah") for the call to flow.set() to see this.
So, what am I supposed to do to set a flow variable inside the HTML
document of a template?
Many thanks!
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