실행 시간 확인

<script type="text/javascript">

    // 좌표 변환 실행 시간 체크
    function fn_test(){
        var myDate = new Date();
        document.getElementById("timestemp").value = myDate.getHours() + ":" + myDate.getMinutes() + ":" + myDate.getSeconds() + ":" + myDate.getMilliseconds();
    
        for (var i = 0; i < 10000; i++){
            var lon = 7654321 + i;
            var lat = 1234567 - i;
            var point = OpenLayers.Projection.transform(new OpenLayers.Geometry.Point(lon,lat),"EPSG:5183","EPSG:5181");
        }

        myDate = new Date();
        document.getElementById("timestemp").value += " ~ " + myDate.getHours() + ":" + myDate.getMinutes() + ":" + myDate.getSeconds() + ":" + myDate.getMilliseconds();
    }

</script>

 

<div>
    <input id="btnTest" type="button" value="테스트" onclick="fn_test();">
    <input id="timestemp" type="text" style="width: 250px" value="" />
</div>