實務形計算機
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將下列程式碼複製至<head>程式碼</head>區內。
<script LANGUAGE="JavaScript"> function pad(anystr) { document.calc.shownum.value += anystr } function calcit() { document.calc.shownum.value = eval(document.calc.shownum.value) } function clearit() { document.calc.shownum.value = "" } function backspace() { curvalue = document.calc.shownum.value curlength = curvalue.length curvalue = curvalue.substring(0,curlength-1) document.calc.shownum.value = curvalue } </script> <p align="center"><map NAME="calcmap"> <area SHAPE="RECT" COORDS="10,80,40,106" HREF="javascript:pad('1')"> <area SHAPE="RECT" COORDS="49,80,78,106" HREF="javascript:pad('2')"> <area SHAPE="RECT" COORDS="88,79,117,106" HREF="javascript:pad('3')"> <area SHAPE="RECT" COORDS="128,81,158,105" HREF="javascript:pad('+')"> <area SHAPE="RECT" COORDS="11,115,39,141" HREF="javascript:pad(" 0")"> <area SHAPE="RECT" COORDS="49,115,78,142" HREF="javascript:pad('.')"> <area SHAPE="RECT" COORDS="89,116,119,141" HREF="javascript:calcit()"> <area SHAPE="RECT" COORDS="128,116,158,142" HREF="javascript:pad('-')"> <area SHAPE="RECT" COORDS="167,80,194,105" HREF="javascript:pad('*')"> <area SHAPE="RECT" COORDS="167,116,196,141" HREF="javascript:pad('/')"> <area SHAPE="RECT" COORDS="11,43,39,71" HREF="javascript:pad('4')"> <area SHAPE="RECT" COORDS="50,45,77,69" HREF="javascript:pad('5')"> <area SHAPE="RECT" COORDS="88,44,117,71" HREF="javascript:pad('6')"> <area SHAPE="RECT" COORDS="127,44,158,71" HREF="javascript:pad(')')"> <area SHAPE="RECT" COORDS="165,43,196,70" HREF="javascript:backspace()"> <area SHAPE="RECT" COORDS="10,7,40,33" HREF="javascript:pad('7')"> <area SHAPE="RECT" COORDS="48,7,81,35" HREF="javascript:pad('8')"> <area SHAPE="RECT" COORDS="87,7,117,34" HREF="javascript:pad('9')"> <area SHAPE="RECT" COORDS="127,7,156,34" HREF="javascript:pad('(')"> <area SHAPE="RECT" COORDS="166,7,195,35" HREF="javascript:clearit()"></map> <form NAME="calc"> <table BORDER="1" BGCOLOR="#C0C0C0"> <tr> <td WIDTH="213"><center> <p align="center"><input NAME="shownum" VALUE MAXLENGTH="25" SIZE="25"></p> </center></td> </tr> <tr> <td WIDTH="213"> <img USEMAP="#calcmap" SRC="calcbttn.gif" BORDER="0" width="206" height="153"> </td> </tr> </table> </form> |