$(function () { var stime = GetNow(); $('table tr').each(function () { $(this).children().eq(0).hide(); }); var etime = GetNow(); var ptime = etime - stime; $('#s').text('經過時間' + ptime + '毫秒'); function GetNow() { var d = new Date(); return d.getTime(); ; } });
<p><span id='s'></span></p> <table border='2'> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> <tr><td>1</td><td>2</td></tr> </table>