手把手教你制作简易计算器

用户8909609

发布于 2023-12-25 09:18:25

1160

发布于 2023-12-25 09:18:25

文章被收录于专栏：BM CTFBM CTF

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实现过程： HTML+Css+JS 具体通过标签实现计算器整个的框架 通过Css样式实现计算器页面布局及框架优化 通过JavaScript+算法实现计算器计算过程
次实验过程： 背景图片+背景音乐（看个人意愿加！）

安排：

<!--HTML源码页-->
<head>
  <link rel="icon" href="猫.png
    ">
  <title>
    简易计算器
  </title>
</head>
<body background="5-121106095005.gif"
  </body>
<h2><p align="center">此工具由白猫制作完成!</p></h2>
<link href="计算器.css
  " rel="stylesheet" type="text/css" />
<script src="计算器.js
  "></script>
<table id="calculater" onClick="calculater()">
  <tr>
    <td id="display" colspan="5">0</td>
  </tr>
  <tr>
    <td class="numberkey" >1</td>
    <td class="numberkey" >2</td>
    <td class="numberkey" >3</td>
    <td class="numberkey" >+</td>
    <td class="numberkey" id="deletesign"><a href="计算器.htm" class="item">归零</a></td>
  </tr>
  <tr>
    <td class="numberkey" >4</td>
    <td class="numberkey" >5</td>
    <td class="numberkey" >6</td>
    <td class="numberkey" >-</td>
    <td rowspan="3" id="equality" onclick="resultscalcaulte()">=</td>
  </tr>
  <tr>
    <td class="numberkey" >7</td>
    <td class="numberkey" >8</td>
    <td class="numberkey" >9</td>
    <td class="numberkey" >*</td>
  </tr>
  <tr >
    <td class="numberkey" >+/-</td>
    <td class="numberkey" >0</td>
    <td class="numberkey" >.</td>
    <td class="numberkey" >/</td>
  </tr>
  <script>
    alert("手把手教你制作简易计算器！")
  </script>

/*CSS样式源码页*/
*{

  padding:0;

  margin:1px;

}

#calculater{

  margin: auto;

  margin-top: 30px;

  border: solid 6px #2371D3;

  border-spacing: 0px;

}

#display{

  width: 100%;

  height: 30px;

  border-bottom: solid 4px #2371D3;

  font-weight: bold;

  color: #193D83;

  font-family: 黑体;

  padding-left: 2px;

}

.numberkey{

  cursor: pointer;

  width: 40px;

  height: 30px;

  border: solid 1px #FFFFFF;

  background: #2371D3;

  color: #ffffff;

  text-align: center;

  font-weight: bold;

  font-family: 黑体;

}

#equality{

  cursor: pointer;

  width: 40px; 

  height: 100%;

  background: #2371D3;

  border: solid 1px #FFFFFF;

  color: #ffffff;

  text-align: center;

  font-weight: bold;

  font-family: 黑体; 

}

.numberkey:hover{

  background: #EA6F30; 

}

#equality:hover{

  background: #EA6F30; 

}

/*JS计算器算法源码页*/
var results="";

var calresults="";

function calculater(){

  if (event.srcElement.innerText=="=") {

    return;

  }

  results+=event.srcElement.innerText;

  display.innerText=results;

}

function resultscalcaulte(){

  calresults=eval(results);

  display.innerText=calresults;

}

过程检验：