html 如何设计带小数的计算器
展开全部
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style type="text/css">
input {
height:32px;
width:45px;
}
</style>
</head>
<body>
<table>
<tr>
<td scope="col"><input type="button" value="复位" id = "c"></td>
<td scope="col"><input type="text" value="" id="msg" style="width:155px;"></td>
</tr>
<tr>
<td scope="col">结果:</th>
<td scope="col"><input type="text" value="" id="r" style="width:155px;"></td>
</tr>
</table>
<table width="16%" border="0">
<tr style="text-align:left;">
<th width="25%" scope="col"><input type="button" value="1"></th>
<th width="25%" scope="col"><input type="button" value="2"></th>
<th width="25%" scope="col"><input type="button" value="3"></th>
<th width="25%" scope="col"><input type="button" value="+"></th>
</tr>
<tr>
<td><input type="button" value="4"></td>
<td><input type="button" value="5"></td>
<td><input type="button" value="6"></td>
<td><input type="button" value="-"></td>
</tr>
<tr>
<td><input type="button" value="7"></td>
<td><input type="button" value="8"></td>
<td><input type="button" value="9"></td>
<td><input type="button" value="*"></td>
</tr>
<tr>
<td><input type="button" value="0"></td>
<td><input type="button" value="."></td>
<td><input type="button" value="=" id="s"></td>
<td><input type="button" value="/"></td>
</tr>
</table>
<script type="text/javascript">
var x=document.getElementsByTagName("input");
for(var f1 in x){
x[f1].onclick = function(){
m(this.value)
}
}
document.getElementById("s").onclick = function(){
var ss = document.getElementById("msg").value;
document.getElementById("r").value = eval(ss);
};
document.getElementById("c").onclick = function(){
document.getElementById("msg").value="";
document.getElementById("r").value="";
}
function m(s){
var ss = document.getElementById("msg").value;
ss = ss || "";
ss = ""+ss + s;
document.getElementById("msg").value= ss;
}
</script>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style type="text/css">
input {
height:32px;
width:45px;
}
</style>
</head>
<body>
<table>
<tr>
<td scope="col"><input type="button" value="复位" id = "c"></td>
<td scope="col"><input type="text" value="" id="msg" style="width:155px;"></td>
</tr>
<tr>
<td scope="col">结果:</th>
<td scope="col"><input type="text" value="" id="r" style="width:155px;"></td>
</tr>
</table>
<table width="16%" border="0">
<tr style="text-align:left;">
<th width="25%" scope="col"><input type="button" value="1"></th>
<th width="25%" scope="col"><input type="button" value="2"></th>
<th width="25%" scope="col"><input type="button" value="3"></th>
<th width="25%" scope="col"><input type="button" value="+"></th>
</tr>
<tr>
<td><input type="button" value="4"></td>
<td><input type="button" value="5"></td>
<td><input type="button" value="6"></td>
<td><input type="button" value="-"></td>
</tr>
<tr>
<td><input type="button" value="7"></td>
<td><input type="button" value="8"></td>
<td><input type="button" value="9"></td>
<td><input type="button" value="*"></td>
</tr>
<tr>
<td><input type="button" value="0"></td>
<td><input type="button" value="."></td>
<td><input type="button" value="=" id="s"></td>
<td><input type="button" value="/"></td>
</tr>
</table>
<script type="text/javascript">
var x=document.getElementsByTagName("input");
for(var f1 in x){
x[f1].onclick = function(){
m(this.value)
}
}
document.getElementById("s").onclick = function(){
var ss = document.getElementById("msg").value;
document.getElementById("r").value = eval(ss);
};
document.getElementById("c").onclick = function(){
document.getElementById("msg").value="";
document.getElementById("r").value="";
}
function m(s){
var ss = document.getElementById("msg").value;
ss = ss || "";
ss = ""+ss + s;
document.getElementById("msg").value= ss;
}
</script>
</body>
</html>
本回答由提问者推荐
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
博思aippt
2024-07-20 广告
作为深圳市博思云创科技有限公司的工作人员，对于Word文档生成PPT的操作，我们有以下建议：1. 使用另存为功能：在Word中编辑完文档后，点击文件->另存为，选择PowerPoint演示文稿（*.pptx）格式，即可将文档内容转换为PPT...
点击进入详情页
本回答由博思aippt提供
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
