Last Updated : 11 Jul, 2025
The boolean.toString() method is used to return a string either "true" or "false" depending upon the value of the specified boolean object.
Syntax:
boolean.toString()
Parameter: This method does not accept any parameter.
Return Values: It returns a string either "true" or "false" depending upon the value of the specified boolean object.
Below are examples of the Boolean toString() method.
Example 1:
javascript
// Here Boolean object obj
// is created for the value 27
let obj = new Boolean(27);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
true
Example 2:
javascript
// Here Boolean object obj is
// created for the value true.
let obj = new Boolean(true);
// Here boolean.toString() function
// is used for the created object obj.
console.log(obj.toString());
Output:
true
Example 3:
javascript
// Here Boolean object obj is
// created for the value 1.
let obj = new Boolean(1);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
true
Example 4:
javascript
// Here Boolean object obj is
// created for the value -1.
let obj = new Boolean(-1);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
true
Example 5:
javascript
// Here Boolean object obj is
// created for the value 1.2
let obj = new Boolean(1.2);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
true
Example 6:
javascript
// Here Boolean object obj is created
// for the value as string "gfg"
let obj = new Boolean("gfg");
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
true
Example 7:
javascript
// Here Boolean object obj is created
// for the value false.
let obj = new Boolean(false);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
false
Errors and Exceptions: If we try to assign a new boolean with a variable that is not defined or a complex number then an error will be thrown instead of the default true/false value.
Example 1: Here the value as geeksforgeeks gives an error because this value is not defined only true and false have been predefined.
javascript
// Here Boolean object obj is created
// for the value geeksforgeeks.
let obj = new Boolean(geeksforgeeks);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
Error: geeksforgeeks is not defined
Example 2: Here complex number can not be taken as the parameter only integer values and strings can be taken as the parameter which is why it returns an error.
javascript
// Here Boolean object obj is created for the
// value such as complex number 1+2i
let obj = new Boolean(1 + 2i);
// Here boolean.toString() function is
// used for the created object obj.
console.log(obj.toString());
Output:
Error: Invalid or unexpected token
We have a complete list of Javascript Date Objects, to check those please go through this JavaScript Boolean Complete Reference article.
Supported Browsers: The browsers supported by JavaScript Boolean toString() Method are listed below:
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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