console 命令行工具 X clear

console

function btn(){

var u=document.getElementById("name").value
var p=document.getElementById("pwd").value

if((u=="admin" && p==123456) || (u=="zhaozihan" && p==123456)){
   location.href="https://jsrun.net/9ryKp"
}else{
  window.alert("登录失败!")
  }
}
// 清除内容
function btn1(){

var input=document.getElementsByTagName("input")
var i;
for( i=0;i<input.length;i++){
 input[i].value=""
  }


}

<html>
    <head><title>登录信息</title></head> 
<body>
    <sapn>用户名</span>
	<input type="text"  id="name">
      <br/>
     <sapn>密码：</span>
     	<input type="password"  id="pwd">
         <br/>
         <button onclick="btn()">提交</button>
         <button  onclick="btn1()" >重置</button>
<br/>
<br/>
</body>
</html>