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JavaScript Boolean Constructor Property

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  • Difficulty Level : Basic
  • Last Updated : 28 Mar, 2023
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JavaScript boolean constructor property returns the constructor function for an object. The function which is returned by this property is just the reference to this function, not a Boolean containing the function’s name The JavaScript number constructor, string constructor, and boolean constructor return function Boolean() { [native code] }, function Number() { [native code] }, and function String() { [native code] } respectively.


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: 


function func() {
    var bool = false;
    var value = bool.constructor;


ƒ Boolean() { [native code] }

Example 2: This example illustrates boolean constructor property. 


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


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 complete list of Javascript Boolean methods, to check those please go through the Javascript Boolean Complete Reference article.

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