菜鸟编程、有简单的代码看看吗？
- 提问者网友：你挡着我发光了
- 2021-05-09 05:58
- 五星知识达人网友：等灯
- 2021-05-09 07:29
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>简易计算器</TITLE>
<STYLE type="text/css">
body{background-color:#99CCFF;}
table{border-left:1 #FFFFFF solid;border-top:1 #FFFFFF solid;}
.input1{BORDER-RIGHT: #FFFFFF 1px solid; BORDER-TOP: #000000 1px solid; BORDER-LEFT: #000000 1px solid;BORDER-BOTTOM: #FFFFFF 1px solid;width:180px;BACKGROUND-COLOR:#FFFFFF;text-align:right;}
input{BORDER-RIGHT: #000000 1px solid; BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid; COLOR: #000080; BORDER-BOTTOM: #000000 1px solid; BACKGROUND-COLOR: #d8d8d0;width:40px;height:20px;}
TD{border-bottom:#FFFFFF 1 solid;border-right:#FFFFFF 1 solid;height:25px;}
</STYLE>
<SCRIPT language="javascript">
var total=0; //全局变量total,累计输入
var FlagNew = false; //是否是新的操作数（输入的第二个数）
var Opp = ""; //运算符变量
function clearall(){
total=0;
document.myform.number.value=0;//清除结果
}
function enternumber(Num){ //数字按钮单击调用的函数，Num表示输入的数字
if (FlagNew) { //判断输入的是否新的操作数
document.myform.number.value = Num;
FlagNew = false;
}
else {
if (document.myform.number.value== "0")
document.myform.number.value= Num;
else
document.myform.number.value+= Num; //记录输入的操作 数
}
}
function Operation (Op) { //“加减乘除”按钮单击调用的函数，Op代表运算符号
var Num1=document.myform.number.value;
if (FlagNew && Opp != "=");{
FlagNew = true;
// 根据运算符进行运算
if ( '+' == Opp)
total +=parseFloat(Num1);
else if ( '-' == Opp)
total -=parseFloat(Num1);
else if ( '/' == Opp)
total /=parseFloat(Num1);
else if ( '*' == Opp)
total *=parseFloat(Num1);
else
{total =parseFloat(Num1); }
document.myform.number.value= total; //结果文本框累计数字
Opp = Op;
}
}
</SCRIPT>
</HEAD>
<BODY>
<TABLE width="180" border="0" cellspacing="0" cellpadding="3"align="center">
<FORM action="" method="post" name="myform">
<TR>
<TD colspan="4"><INPUT name="number" type="text" class="input1" value="0"></TD>
</TR>
<TR>
<TD><INPUT name="number7" type="button" value="7" onClick="enternumber(7)"></TD>
<TD><INPUT name="number8" type="button" value="8" onClick="enternumber(8)"></TD>
<TD><INPUT name="number9" type="button" value="9" onClick="enternumber(9)"></TD>
<TD><INPUT name="number+" type="button" value="+" onClick="Operation('+')"></TD>
</TR>
<TR>
<TD><INPUT name="number4" type="button" value="4" onClick="enternumber(4)"></TD>
<TD><INPUT name="number5" type="button" value="5" onClick="enternumber(5)"></TD>
<TD><INPUT name="number6" type="button" value="6" onClick="enternumber(6)"></TD>
<TD><INPUT name="number-" type="button" value="-" onClick="Operation('-')"></TD>
</TR>
<TR>
<TD><INPUT name="number1" type="button" value="1" onClick="enternumber(1)"></TD>
<TD><INPUT name="number2" type="button" value="2" onClick="enternumber(2)"></TD>
<TD><INPUT name="number3" type="button" value="3" onClick="enternumber(3)"></TD>
<TD><INPUT name="number*" type="button" value="*" onClick="Operation('*')"></TD>
</TR>
<TR>
<TD><INPUT name="number0" type="button" value="0" onClick="enternumber(0)"></TD>
<TD><INPUT name="numberC" type="button" value="C" onClick="clearall();"></TD>
<TD><INPUT name="number/" type="button" value="/" onClick="Operation('/')"></TD>
<TD><INPUT name="number=" type="button" value="=" onClick="Operation('=')"></TD>
</TR></FORM>
</TABLE>
</BODY>
</HTML>
以上是HTML+JS+CSS制作