javascript - Check if a specific hidden div exists and if not create one

Question

I want to check if a specific hidden div exists and if not create one.

I do:

function myFunction(somestring) {

   var myHiddenDiv = jQuery('<div id="js_method" style="display:none">'); 
   ...
   myHiddenDiv.append(somestring);

}

The problem is this seems to create a new hidden div every time the function is called on the same page.

the hidden div just seems scoped to the function, whereas I want it scoped to the page.

Any tips.

tips please Thanks.