test.github.io/jsj.html at main · 0hulo0/test.github.io · GitHub

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<html>
 <head></head>
 <body>
  <button id="t0btn" type="button" onclick="tab1Click()" style="background-color:transparent; border-style:none; color:#6ccb6c; font-weight:bold;"> 计算机
   <meta name="content-type" content="text/html; charset=UTF-8"> <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> <!--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">
    <tbody>
     <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="pision" 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>
    </tbody>
   </table> </button>
 </body>
</html>