代码如下： <!--脚本说明:把如下代码加入<body>区域中--> <script language="JavaScript"> <!-- function equa1() { a = document.form1.aa.value; b = document.form1.ab.value; c = a-b; document.form1.total1.value = c } function equa2() { a = document.form1.ba.value; b = document.form1.bb.value; c = (a*1)+(b*1); document.form1.total2.value = c } function equa3() { a = document.form1.ca.value; b = document.form1.cb.value; c = a/b; document.form1.total3.value = c } function equa4() { a = document.form1.da.value; b = document.form1.db.value; c = a*b; document.form1.total4.value = c } //--> </script> <form name="form1"><center> <table border=1 cellpadding=1 cellspacing=1> <tr> <td><input type="text" size=5 name="aa"> - <input type="text" name="ab" size=5></td> <td> =<input type="text" name="total1" size=5></td> <td><input type="button" value="Calculate" onClick="equa1()"></td> <tr> <td><input type="text" size=5 name="ba"> + <input type="text" name="bb" size=5></td> <td> =<input type="text" name="total2" size=5></td> <td><input type="button" value="Calculate" onClick="equa2()"></td> <tr> <td><input type="text" size=5 name="ca"> / <input type="text" name="cb" size=5></td> <td>=<input type="text" name="total3" size=5></td> <td><input type="button" value="Calculate" onClick="equa3()"></td> <tr> <td><input type="text" size=5 name="da"> * <input type="text" name="db" size=5></td> <td> =<input type="text" name="total4" size=5></td> <td><input type="button" value="Calculate" onClick="equa4()"></td> <tr> <td colspan=3 align=center> <input type="reset" value="Reset"></td> </table> </form>
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