<form method=post>
<input name="useremail" type="text" value="<%=Request("useremail")%>" size="40" maxlength="40" onclick="Javascript:this.value;">
<input onclick="javascript:emailcheck();" type="button" value="check" name="menu1">
</form>
<input name="useremail" type="text" value="<%=Request("useremail")%>" size="40" maxlength="40" onclick="Javascript:this.value;">
<input onclick="javascript:emailcheck();" type="button" value="check" name="menu1">
</form>
理论上
onclick="Javascript:this.value;"
<%=Request("useremail")%>应该有记录<input name="useremail" type="text" value="<%=Request("useremail")%>" size="40" maxlength="40" onclick="Javascript:this.value;">
<input onclick="javascript:emailcheck();" type="button" value="check" name="menu1">