JavaScript Boolean toString() Method

Below is the example of Boolean toString() method.

• Example:
  
  

  
  
  

  <script>   // Here Boolean object obj    // is created for the value 27   var obj = new Boolean(27);      // Here boolean.toString() function is    // used for the created object obj.   document.write(obj.toString()); </script>

• Output:

  true

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.

More codes for the above method are as follows:

• Example 1:
  
  

  
  
  

  <script>   // Here Boolean object obj is    // created for the value true.   var obj = new Boolean(true);      // Here boolean.toString() function   // is used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  true

• Example 2:
  
  

  
  
  

  <script>   // Here Boolean object obj is    // created for the value 1.   var obj = new Boolean(1);      // Here boolean.toString() function is   // used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  true

• Example 3:
  
  

  
  
  

  <script>   // Here Boolean object obj is   // created for the value -1.   var obj = new Boolean(-1);      // Here boolean.toString() function is   // used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  true

• Example 4:
  
  

  
  
  

  <script>   // Here Boolean object obj is   // created for the value 1.2   var obj = new Boolean(1.2);      // Here boolean.toString() function is   // used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  true

• Example 5:
  
  

  
  
  

  <script>   // Here Boolean object obj is created    // for the value as string "gfg"   var obj = new Boolean("gfg");      // Here boolean.toString() function is    // used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  true

• Example 6:
  
  

  
  
  

  <script>   // Here Boolean object obj is created   // for the value false.   var obj = new Boolean(false);      // Here boolean.toString() function is   // used for the created object obj.   document.write(obj.toString()); </script>

  Output:

  false

Errors and Exceptions:

• Example 1: Here the value as geeksforgeeks gives error because this value is not defined only true and false has been predefined.
  
  

  
  
  

  <script>   // Here Boolean object obj is created    // for the value geeksforgeeks.   var obj = new Boolean(geeksforgeeks);      // Here boolean.toString() function is   // used for the created object obj.   console.log(obj.toString()); </script>

  Output:

  Error: geeksforgeeks is not defined

• Example 2: Here complex number can not be taken as the parameter only integer values and string can be taken as the parameter that is why it returns error.
  
  

  
  
  

  <script>   // Here Boolean object obj is created for the   // value such as complex number 1+2i   var obj = new Boolean(1 + 2i);      // Here boolean.toString() function is    // used for the created object obj.   console.log(obj.toString()); </script>

  Output:

  Error: Invalid or unexpected token

Supported Browsers: The browsers supported by JavaScript Boolean toString() Method are listed below:

• Google Chrome
• Internet Explorer
• Mozilla Firefox
• Safari
• Opera