When you create a new HTML element, you may want to keep its reference and later add a few more properties to it in the script. Just store it in a var, and continue accessing it. See below for an example.
var myDiv = $("<div>Dummy Content</div>");
…
..
/*Later access the jQuery object with the var name and continue working with the object*/
myDiv.attr("id", "newlyCreatedDev");
myDiv.attr("class", "div mClass").appendTo("body");
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