javascript计算器(1) <html><head><title>计算器</title></head><body bgcolor="#ffffff" onload="FKeyPad.ReadOut.focus();FKeyPad.ReadOut.select();"><FORM name="Keypad" action=""><TABLE align="center"> <B> <TABLE align="center" border=2 width=50 height=60 cellpadding=1 cellspacing=5> <TR> <TD colspan=3 align=middle><input name="ReadOut" type="Text" onkeypress="CheckOut()" size=24 value="0" width=100%></TD> <TD></TD> <TD><input name="btnClear" type="Button" value=" C " onclick="Clear()"></TD> <TD><input name="btnClearEntry" type="Button" value=" CE " onclick="ClearEntry()"></TD> </TR> <TR> <TD><input name="btnSeven" type="Button" value=" 7 " onclick="NumPressed(7)"></TD> <TD><input name="btnEight" type="Button" value=" 8 " onclick="NumPressed(8)"></TD> <TD><input name="btnNine" type="Button" value=" 9 " onclick="NumPressed(9)"></TD> <TD></TD> <TD><input name="btnNeg" type="Button" value=" +/- " onclick="Neg()"></TD> <TD><input name="btnPercent" type="Button" value=" % " onclick="Percent()"></TD> </TR> <TR> <TD><input name="btnFour" type="Button" value=" 4 " onclick="NumPressed(4)"></TD> <TD><input name="btnFive" type="Button" value=" 5 " onclick="NumPressed(5)"></TD> <TD><input name="btnSix" type="Button" value=" 6 " onclick="NumPressed(6)"></TD>
