<td id="thistext" style="WIDTH: 99px; CURSOR: hand" onclick="NumSearch(this)" bgColor="#ffffff">15件</td>
document.getElementById("thistext").innerText = num + '件';
已购商品<span id="thistext" name="loan" style="text-decoration: underline">15件</span>去支付,
document.getElementById("thistext").innerText ="<u>"+ num + '件'+"</u>";
document.getElementById("thistext").innerTHTML ="<u>"+ num + '件'+"</u>";
document.getElementById("thistext").style["textDecoration"] = "underline";