HTML | DOM Input Search required Property

Difficulty Level : Basic
Last Updated : 12 Mar, 2019

The DOM Input Search required Property in HTML DOM is used to set or return whether Input search Field should be filled or not when submitting the form. This property is used to reflect the HTML required attribute.

Syntax:

It returns the Input search required property.
```
searchObject.required
```
It is used to set the Input search required property.
```
searchObject.required = true|false
```

Property Values:

true: It specifies that the search field must be filled out before submitting the form.
false: It is the default value. It specifies that the search field must not be filled out before submitting the form.

Return Value: It returns a Boolean value which represents that the search Field must be filled or not before submitting the form.

Example-1: This example illustrates how to return Input search required property.

<!DOCTYPE html>
<html>
  
<head>
    <title>
      Input Search required Property
  </title>
    <style>
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    </style>
</head>
  
<body>
  
    <h1>GeeksforGeeks</h1>
    <h2>Input Search required Property</h2>
    <form id="myGeeks">
        <input type="Search" 
               id="test" 
               placeholder="Type to search.." 
               value="GeeksForGeeks" 
               required>
    </form>
    <br>
    <br>
    <button ondblclick="Access()">
      click here
    </button>
  
    <p id="check" 
       style="font-size:24px;
              color:green;">
  </p>
  
    <script>
        function Access() {
  
            // type="search" 
            var s = document.getElementById(
                "test").required;
            
            document.getElementById(
                "check").innerHTML = s;
        }
    </script>
  
</body>
  
</html>

Output:

Before Clicking On Button:

After Clicking On Button :

Example-2: This Example illustrates that how to set the Input search required Property.

<!DOCTYPE html>
<html>
  
<head>
    <title>
      Input Search required Property
  </title>
    <style>
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    </style>
</head>
  
<body>
  
    <h1>GeeksforGeeks</h1>
    <h2>Input Search required Property</h2>
    <form id="myGeeks">
        <input type="Search" 
               id="test" 
               placeholder="Type to search.." 
               required>
    </form>
    <br>
    <br>
    <button ondblclick="Access()">
      click here
    </button>
  
    <p id="check" 
       style="font-size:24px;
              color:green;">
  </p>
  
    <script>
        function Access() {
  
            // type="search" 
            var s = document.getElementById(
                "test").required = false;
            
            document.getElementById(
                "check").innerHTML = s;
        }
    </script>
  
</body>
  
</html>