HTML | DOM 输入文本对象

HTML DOM 中的Input Text Object用于表示具有 type=”text”属性的 HTML 元素。可以使用 getElementById() 方法访问type=”text”的 元素。

句法：

• 它用于访问输入文本对象。

document.getElementById("id");

• 它用于创建输入元素。

document.createElement("input");

输入文本对象属性：

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

示例 1：此示例使用 getElementById() 方法访问具有 type=”text” 属性的 元素。

html

 

    
        HTML DOM Input Text Object
    
  
 

 
    GeeksForGeeks
 
    DOM Input Text Object
 
    
     
     
Click on button to display the text field
 
     
    Click Here!
     
    
 
     
    
    
        function myGeeks() {
            var txt = document.getElementById("text_id").value;
            document.getElementById("GFG").innerHTML = txt;
        }
    

 

输出：
点击按钮前：

点击按钮后：

示例 2：此示例使用 document.createElement() 方法创建具有 type=”text” 属性的 元素。

html

 

    
        HTML DOM Input Text Object
    
  
 

 
    GeeksForGeeks
 
    DOM Input Text Object
 
     
Click the button to create Text Field
 
     
    
        Click Here!
    
     
    
    
        function myGeeks() {
             
            /* Create an input element */
            var x = document.createElement("INPUT");
             
            /* Set the type attribute */
            x.setAttribute("type", "text");
             
            /* Set the value to the attribute */
            x.setAttribute("value", "Hello Geeks!");
             
            /* Append node to the body */
            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
• 边缘
• 火狐浏览器
• 歌剧
• 苹果浏览器