console 命令行工具 X clear

console

function clear_value(){
var input=document.getElementsByTagName("input")
 var i;
  for (i=0;i<input.length;i++){
      input[i].value=" "
}
}
function sumbit(){
var p=document.getElementById("one").value
var u=parseInt(p)
document.getElementById("two").value=u.toString(2)
}

<html>
    <head>
        <title>...</title>
    </head>
    <body>
        <h1>十进制转化二进制</h1><br/>
        <input type="text"  name="username" id="one"  placeholder="请输入数字">
        <button onclick="sumbit()">转换</button>
        <input type="text"  name="username" id="two" placeholder="转换结果">
        <button onclick="clear_value()">清除</button>
    </body>
</html>