JavaScript制作简易计算器（不用eval）

本文实例为大家分享了js制作简易计算器的具体代码，供大家参考，具体内容如下

 
 
 
  * {
   padding: 0;
   margin: 0;
  }
  li {
   list-style: none;
  }
  body {
   background: #940032;
  }

  #counter {
   width: 500px;
   height: 420px;
   background: #939;
   margin: 50px auto 0;
   position: relative;
  }

  #counter h2 {
   line-height: 42px;
   padding-left: 15px;
   font-size: 14px;
   font-family: arial;
   color: #ff3333;
  }

  #counter a {
   font-weight: normal;
   text-decoration: none;
   color: #ff3333;
  }

  #counter a:hover {
   text-decoration: underline;
  }

  #bg {
   width: 280px;
   height: 200px;
   border: 3px solid #680023;
   background: #990033;
   filter: alpha(opacity=80);
   opacity: 0.8;
   position: absolute;
   left: 50%;
   top: 115px;
   margin-left: -141px;
  }

  #counter_content {
   width: 250px;
   position: absolute;
   top: 130px;
   left: 130px;
   z-index: 1;
  }

  #counter_content h3 {
   margin-bottom: 10px;
  }

  #counter_content h3 input {
   border: none;
   width: 223px;
   height: 30px;
   line-height: 30px;
   padding: 0 10px;
   background: url(img/ico.png) no-repeat;
   text-align: right;
   color: #333;
   font-size: 14px;
   font-weight: bold;
  }

  #counter_content div {
   width: 250px;
  }

  #counter_content input {
   width: 60px;
   height: 30px;
   line-height: 30px;
   float: left;
   background: url(img/ico.png) no-repeat -303px 0;
   text-align: center;
   color: #fff;
   cursor: pointer;
   margin: 0 1px 4px 0;
   border: 0;
  }

  #counter_content div > input:hover {
   background: url(img/ico.png) no-repeat -243px 0;
  }

  #counter p {
   width: 500px;
   position: absolute;
   bottom: 20px;
   left: 0;
   color: #ff3333;
   text-align: center;
   font-size: 12px;
  }
 



 简易计算
 
  
  
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  
 

关于计算器的精彩文章请查看《计算器专题》 ，更多精彩等你来发现！

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