HTML | DOM 输入密码对象

HTML DOM 中的Input Password Object用于表示 type=”password”的 HTML 输入元素。
可以使用getElementById() 方法访问 type=”password”的输入元素。

句法：

• 用于访问 input type=”password”

  document.getElementById("id");

• 它用于创建 type=”password” 元素。

  document.createElement("input");

对象属性：

Property	Description
type	This property is used to return which type of form element the password field is.
value	This property is used to set or return the value of the value attribute of a password field.
autocomplete	This property is used to set or return the value of the autocomplete attribute of a password field.
autofocus	This property is used to set or return whether a password field should automatically get focus when the page loads.
defaultValue	This property is used to set or return the default value of a password field.
disabled	This property is used to set or return whether a password field is disabled or not.
form	This property is used to return reference to the form that contains the password field.
maxLength	This property is used to set or return the value of the maxlength attribute of a password field.
name	This property is used to set or return the value of the name attribute of a password field.
placeholder	This property is used to set or return the value of the placeholder attribute of a password field.
readOnly	This property is used to set or return whether the password field is read-only or not.
required	This property is used to set or return whether the password field must be filled out before submitting a form.
size	This property is used to set or return the value of the value attribute of the password field.

输入数字对象方法：

• select()：用于选择密码字段的内容。

示例 1：

  

  
      
            GeeksForGeeks  
        
  
    DOM Input Password Object Password:
    
  
    Click the button to get the password 
      of the password field.
  
    
      Click Here!
   
  
    
  
    
        function myFunction() {
            var x = 
            document.getElementById(
              "myPsw").value;
            
            document.getElementById(
              "demo").innerHTML = x;
        }
    
  

  

输出：

点击按钮前：

点击按钮后：

示例 2：

  

  
      
            GeeksForGeeks  
        
  
    DOM Input Password Object
  
    Click the button to create a
      Password Field.
  
    
      Click Here!
    
  
    
        function myFunction() {
            
            // Creating input element.
            var x = document.createElement("INPUT");
              
            // Set type password.
            x.setAttribute("type", "password");
            x.setAttribute("value", "geeks12");
            document.body.appendChild(x);
        }
    
  

  

输出：

点击按钮前：

点击按钮后：

支持的浏览器：

• 谷歌浏览器
• 火狐浏览器
• 边缘
• 苹果浏览器
• 歌剧