Program kod kalkulator ringkas yang ditulis dalam kemahiran js

Program kod kalkulator ringkas yang ditulis dalam kemahiran js_javascript

WBOY

Lepaskan： 2016-05-16 15:47:19

asal

1370 orang telah melayarinya

Saya akan tunjukkan kepada anda program kod kalkulator mudah yang saya tulis baru-baru ini

Kongsi kod seperti berikut

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title> 
<style type="text/css">
 #box{width: 295px; margin: 0 auto; text-align: justify; border: 1px solid #ddd; padding: 15px;}
 .d_num{display: inline-block; margin: 10px; width: 33px; height: 30px; border: 1px solid #ddd; text-align: center; line-height: 30px; cursor: pointer;}
 .sum{margin: 0 10px 10px; line-height: 30px; font-size: 20px;}
 #sum{width: 205px; height: 30px; padding: 0 5px; margin-left: 5px; font-size: 20px;}
 #process{width: 255px; height: 30px; padding: 0 5px; margin-left: 5px; font-size: 20px;}
</style>
</head> 
<body> 
 <div id="box">
 <div class="sum">
  <input type="text" name="process" id="process" value="0" />
 </div>
 <div class="sum">
  SUM:<input type="text" name="sum" id="sum" value="0" />
 </div>
 <div>
  <span data-num="1" class="d_num">1</span>
  <span data-num="2" class="d_num">2</span>
  <span data-num="3" class="d_num">3</span>
  <span data-num="<-" class="d_num"><-</span>
  <span data-num="C" class="d_num">C</span>
 </div>
 <div>
  <span data-num="4" class="d_num">4</span>
  <span data-num="5" class="d_num">5</span>
  <span data-num="6" class="d_num">6</span>
  <span data-num="*" class="d_num">*</span>
  <span data-num="/" class="d_num">/</span>
 </div>
 <div>
  <span data-num="7" class="d_num">7</span>
  <span data-num="8" class="d_num">8</span>
  <span data-num="9" class="d_num">9</span>
  <span data-num="+" class="d_num">+</span>
  <span data-num="-" class="d_num">-</span>
 </div>
 <div>
  <span data-num="0" class="d_num">0</span>
  <span data-num="00" class="d_num">00</span>
  <span data-num="." class="d_num">.</span>
  <span data-num="%" class="d_num">%</span>
  <span data-num="=" class="d_num">=</span>
 </div>
 </div>
 <script type="text/javascript">
 var $box = document.getElementById('box');
 var $sum = document.getElementById('sum');
 var $process = document.getElementById('process');
 var sum = 0, process = '', num1 = '', num2 = '', temp = '', statu = false;
 $box.onclick = function(e){
 var event = window.event || e;
 var ele = event.srcElement || event.target;
 var _className = ele.className;
 if(_className == 'd_num'){
  var num = ele.getAttribute('data-num');//点击的按钮对应的值
  var NotNum = isNaN(num);
  if(!NotNum || num == '.'){ //点击了数字
  if(!statu){ //还没点击过符号
   if(num1 == '0'){
   num1 = '';
   }
   num1 += num;
   process = num1;
  }else{ //已经点击过符号
   if(num2 == '0'){
   num2 = '';
   }
   num2 += num;
   process = num1 + temp + num2;
  }
  $process.value = process;
  }
  else{ //点击了符号
  if(num1 == ''){//非法操作
   return false;
  }
  if(num == 'C'){//归零
   num1 = '';
   num2 = '';
   process = '';
   temp = '';
   sum = '';
   $process.value = '0';
   $sum.value = '0';
   statu = false;
   return false;
  }
  if(num == '<-'){//退档
   if(sum != ''){
   return false;
   }
   if(num2 == ''){
;   num1 = num1.substring(0,num1.length-1);
   if(num1 == ''){
    num1 = '0';
   }
   process = num1;
   $process.value = process;
   }else{
   num2 = num2.substring(0,num2.length-1);
   if(num2 == ''){
    num2 = '0';
   }
   process = num1 + temp + num2;
   $process.value = process;
   }
   return false;
  }
  if(num2 != ''){//a&b
   if(num == '='){//元操作到此结束
   $process.value = process;
   }else{
   $process.value = process + num;
   }
   switch(temp){//元操作继续
   case '+' : sum = parseFloat(num1) + parseFloat(num2); $sum.value = sum; $process.value = process; num1 = sum + ''; num2 = ''; break;
   case '-' : sum = parseFloat(num1) - parseFloat(num2); $sum.value = sum; $process.value = process; num1 = sum + ''; num2 = ''; break;
   case '*' : sum = parseFloat(num1) * parseFloat(num2); $sum.value = sum; $process.value = process; num1 = sum + ''; num2 = ''; break;
   case '/' : sum = parseFloat(num1) / parseFloat(num2); $sum.value = sum; $process.value = process; num1 = sum + ''; num2 = ''; break;
   case '%' : sum = parseFloat(num1) % parseFloat(num2); $sum.value = sum; $process.value = process; num1 = sum + ''; num2 = ''; break;
   }
  }else{//a&？
   if(num == '='){
   return false;
   }
   $process.value = process + num;
   process = '';
  }
  if(num == '='){
   sum = '';
   statu = false;
   return false;
  }
  temp = num;//记录操作符
  statu = true;//已经触发操作状态
  }
 }
 };
 </script>
</div> 
</body> 
</html>

Salin selepas log masuk

Kini ia hanyalah kalkulator standard mudah yang boleh melakukan operasi berterusan tambah, tolak, darab dan bahagi, serta operasi baki. Jika ralat dividen sifar berlaku, gesaan akan diberikan di bawah, seperti ini: