神马品牌网姜伟猎场小说txt云盘:html 简单计算
来源：百度文库 编辑：神马品牌网 时间：2024/04/29 19:11:30
该如何实现？如果用java Script该怎么写？
谢！！
知道问题有点白，但是希望你对我这个菜鸟心细些！！
写出完整的的html代码！！
快啊！！
还有啊！！你的代码乘法可以，怎么加的时候就是简单罗列？
象1+2＝12！！
代码如下:
<!DOCTYPE html>
<html>
<meta name="content-type" content="text/html; charset=UTF-8">
<head>
<title>Calculator</title>
<!--将按键内容以字符串形式存储在文字框中当按钮为“=”时，调用eval方法计算结果然后将结果输出文字框中-->
<script type="text/javascript">
var numresult;
var str;
function onclicknum(nums) {
str = document.getElementById("nummessege");
str.value = str.value + nums;
}
function onclickclear() {
str = document.getElementById("nummessege");
str.value = "";
}
function onclickresult() {
str = document.getElementById("nummessege");
numresult = eval(str.value);
str.value = numresult;
}
</script>
</head>
<body bgcolor="affff" >
<!--定义按键表格,每个按键对应一个事件触发-->
<table border="1" align="center" bgColor="#bbff77"
style="height: 350px; width: 270px">
<tr>
<td colspan="4">
<input type="text" id="nummessege"
style="height: 90px; width: 350px; font-size: 50px" />
</td>
</tr>
<tr>
<td>
<input type="button" value="1" id="1" onclick="onclicknum(1)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="2" id="2" onclick="onclicknum(2)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="3" id="3" onclick="onclicknum(3)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="+" id="add" onclick="onclicknum('+')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td>
<input type="button" value="4" id="4" onclick="onclicknum(4)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="5" id="5" onclick="onclicknum(5)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="6" id="6" onclick="onclicknum(6)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="-" id="sub" onclick="onclicknum('-')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td>
<input type="button" value="7" id="7" onclick="onclicknum(7)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="8" id="8" onclick="onclicknum(8)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="9" id="9" onclick="onclicknum(9)"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="*" id="mul" onclick="onclicknum('*')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td colspan="2">
<input type="button" value="0" id="0" onclick="onclicknum(0)"
style="height: 70px; width: 190px; font-size: 35px">
</td>
<td>
<input type="button" value="." id="point" onclick="onclicknum('.')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="/" id="division"
onclick="onclicknum('/')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td colspan="2">
<input type="button" value="Del" id="clear"
onclick="onclickclear()"
style="height: 70px; width: 190px; font-size: 35px" />
</td>
<td colspan="2">
<input type="button" value="=" id="result"
onclick="onclickresult()"
style="height: 70px; width: 190px; font-size: 35px" />
</td>
</tr>
</table>
</body>
</html>
我来给你一个完整的代码页面：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>新建网页 1</title>
</head>
<body>
m：<input type="text" name="txt1" size="10">
n：<input type="text" name="txt2" size="10">
m*100＋n*10<input type="text" name="txt3" size="10">
<input type="button" name="btn" value="计算" onclick="calculate();">
<script language="javascript">
function calculate(){
var m=new Number();
var n=new Number();
m=document.getElementById("txt1").value;
n=document.getElementById("txt2").value;
document.getElementById("txt3").value=m*100+n*10;
}
</script>
</body>
</html>
onclick="text3.value=text1.value+text2.value"
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>新建网页 1</title>
<script language="javascript">
function calculate(){
//var m = new Number();
//var n = new Number();
var m = document.getElementById("txt1").value;
alert(m);
var n = document.getElementById("txt2").value;
document.getElementById("txt3").value = m*100+n*10;
}
</script>
</head>
<body>
m：<input type="text" id="txt1" size="10">
<br>
n：<input type="text" id="txt2" size="10">
<br>
m*100＋n*10<input type="text" id="txt3" size="10">
<input type="button" name="btn" value="计算" onclick="calculate();">
</body>
</html>