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JavaScript Boolean constructor Property

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  • Difficulty Level : Basic
  • Last Updated : 02 Jan, 2023
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In JavaScript, the boolean constructor property returns the constructor function for an object.
Syntax:  

boolean.constructor

Parameter: This method does not accept any parameter. 

Return value: It returns the function Boolean() { [native code] }.

Below are examples of the Boolean constructor property. 

Example 1: 

javascript




var bool = false;
document.write("bool.constructor:" 
                + bool.constructor);

Output: 

bool.constructor:function Boolean() { [native code] }

Example 2: This example illustrates the boolean constructor property.  

html




<body style="text-align:center;">
    <div>
        <h1 style="color: green;">
            GeeksforGeeks
        </h1>        
        <p>
            JavaScript Boolean constructor Property
            returns the function that created
            the boolean's prototype:
        </p>
        <b id="GFG"></b>    
    </div>
      
    <!-- Script to use boolean constructor -->
    <script>
        var bool = false;
        document.getElementById("GFG").innerHTML
                = bool.constructor;
    </script>
</body>

Output: 

JavaScript Boolean constructor Property

Example 3: This example illustrates boolean constructor property. 

html




<body style="text-align:center;">
    <div>
        <h1 style="color: green;">GeeksforGeeks</h1>
        <p>
            JavaScript Boolean constructor Property
            returns the function that created
            the boolean's prototype:
        </p>
        <button onclick="gfg()">Click me</button>
        <p id="name"></p>
  
    </div>
  
    <!-- Script to use Boolean constructor Property -->
    <script>
        function gfg(){
            var bool = false;
            document.getElementById("name").innerHTML
                    = bool.constructor;
        }
    </script>
</body>

Output: 

JavaScript Boolean constructor Property

JavaScript Boolean constructor Property

Supported Browsers: The browsers supported by JavaScript Boolean constructor Property are listed below:
 

  • Google Chrome 1 and above
  • Internet Explorer 3 and above
  • Mozilla Firefox 1 and above
  • Safari 1 and above
  • Opera 4 and above

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.


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