Thursday, August 28, 2025
HomeLanguagesSet the value of an input field in JavaScript

Set the value of an input field in JavaScript

Sometimes we need to set a default value of the <input> element, This example explains methods to do so.

Text Value Property: This property set/return the value of value attribute of a text field. The value property contains the default value, the value a user types or a value set by a script.

Syntax:

  • Return the value property:
textObject.value
  • Set the value property:
textObject.value = text

Property Values:

  • text: It specifies the value of the input text field.
  • attributeValue: This parameter is required. It specifies the value of the attribute to add.

JavaScript setAttribute() Method: This method adds the specified attribute to an element and sets its specified value. If the attribute is already present, then it’s value is set/changed. 

Syntax:

element.setAttribute(attributeName, attributeValue)

Parameters:

  • attributeName: This parameter is required. It specifies the name of the attribute to add.
  • attributeValue: This parameter is required. It specifies the value of the attribute to add.

Example-1:This example sets the value of the input element to ‘textValue’ by Text Value property. 

html




<!DOCTYPE html>
<html>
  
<head>
    <title>
       Set the value of an input field.
    </title>
</head>
  
<body style="text-align:center;" id="body">
    <h1 style="color:green;">
            GeeksForGeeks
        </h1>
    <input type='text' id='id1' />
    <br>
    <br>
    <button onclick="gfg_Run()">
        click to set
    </button>
    <p id="GFG_DOWN" style="color:green;
                            font-size: 20px;
                            font-weight: bold;">
    </p>
    <script>
        var el_down = document.getElementById("GFG_DOWN");
        var inputF = document.getElementById("id1");
  
        function gfg_Run() {
            inputF.value = "textValue";
            el_down.innerHTML =
                "Value = " + "'" + inputF.value + "'";
        }
    </script>
</body>
  
</html>


Output:

Set the value of an input field

Set the value of an input field

Example-2: This example sets the value of the input element to ‘defaultValue’ by setAttribute method. 

html




<!DOCTYPE html>
<html>
  
<head>
    <title>
        Set the value of an input field.
    </title>
</head>
  
<body style="text-align:center;" id="body">
    <h1 style="color:green;">
            GeeksForGeeks
        </h1>
    <input type='text' id='id1' />
    <br>
    <br>
    <button onclick="gfg_Run()">
        click to set
    </button>
    <p id="GFG_DOWN" style="color:green;
                            font-size: 20px;
                            font-weight: bold;">
    </p>
    <script>
        var el_down = document.getElementById("GFG_DOWN");
        var inputF = document.getElementById("id1");
  
        function gfg_Run() {
            inputF.setAttribute('value', 'defaultValue');
            el_down.innerHTML =
                "Value = " + "'" + inputF.value + "'";
        }
    </script>
</body>
  
</html>


Output:

Set the value of an input field

Set the value of an input field

JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.

RELATED ARTICLES

Most Popular

Dominic
32244 POSTS0 COMMENTS
Milvus
80 POSTS0 COMMENTS
Nango Kala
6615 POSTS0 COMMENTS
Nicole Veronica
11787 POSTS0 COMMENTS
Nokonwaba Nkukhwana
11832 POSTS0 COMMENTS
Shaida Kate Naidoo
6728 POSTS0 COMMENTS
Ted Musemwa
7009 POSTS0 COMMENTS
Thapelo Manthata
6684 POSTS0 COMMENTS
Umr Jansen
6697 POSTS0 COMMENTS