Uncaught ReferenceError: setModalPopup is not defined

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Javascript

Hi Team,

I am calling a method onClick of javascript.
Its give me error
Uncaught ReferenceError: setModalPopup is not defined

i have a function as follows:

function setModalPopup(empId) {
            debugger;
            var tempData = $.grep(data, function (item) { return item.empId == empId })[0];
            var $TempDataStatus = $("<div></div>");
            $TempDataStatus = $("#dataTemplate").tmpl({ context: this, data: tempData });
        }

<button id="showButton" onclick="setModalPopup('empId');">
       Show</button>

Anyone can help me .
Kindly revert
Thanks in Advance
Harshal.