input框改变type属性详解编程语言

<input name="password" type="password" id="pass"  placeholder="密码"/> 
<button>显示密码</button>

$('button').on('click',function(){ 
   //必须用原生JS 
   var pass =  document.getElementById('pass'); 
   if(pass.type == 'password'){ 
       pass.type = "text"; 
       $("button").text('隐藏密码') 
   } else { 
       pass.type = 'password'; 
       $("button").text('显示密码') 
     }; 
})