Bài 41: Hàm xử lý Number trong Javascript - 4
RUN
<script language="javascript"> var x = 123; document.write("Typeof x: " + typeof x + "<br/>"); // number x = x.toString(); document.write("Typeof x: " + typeof x + "<br/>"); // string document.write("Typeof x: " + typeof 12 + "<br/>"); // number document.write("Typeof x: " + typeof (12).toString() + "<br/>"); // string </script>
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