How to Use Variables in Template Literals (``) in JSP

While writing a function in a JSP environment, not React, I had trouble: the values passed in as variables printed fine in console.log(), but did not come out correctly when I used the variables.

A senior coworker showed me the fix, and applying it as below solved the problem.

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3function markPosition(mark, target){
     let markBox = document.querySelector(`.markBox\${target}`);
}