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JavaScript Number toString() Method

  • Last Updated : 20 Jul, 2021

Below is the example of the Number toString() Method.

  • Example:




    <script type="text/javascript">
        var num=12;
        document.write("Output : " + num.toString(2));          
    </script>
  • Output:
    Output:1100

The toString() method in Javascript is used with a number and converts the number to a string. It is used to return a string representing the specified Number object.

Syntax:

num.toString(base)

The toString() method is used with a number num as shown in above syntax using the ‘.’ operator. This method will convert num to a string.

Parameters Used: This method accepts a single optional parameter base. This parameter specifies the base in which the integer is represented in the string. It is an integer between 2 and 36 which is used to specify the base for representing numeric values.



Return Value: The num.toString() method returns a string representing the specified number object.

Below are some examples to illustrate the working of toString() method in JavaScript:

  1. Converting a number to a string with base 2: To convert a number to a string with base 2, we will have to call the toString() method by passing 2 as a parameter.




    <script type="text/javascript">
        var num=213;
        document.write("Output : " + num.toString(2));          
    </script>

    Output:

    Output:11010101
  2. Converting a number to a string with base 8: To convert a number to a string with base 8, we will have to call the toString() method by passing 8 as a parameter.




    <script type="text/javascript">
        var num=213;
        document.write("Output : " + num.toString(8));          
    </script>

    Output:

    Output : 325
  3. Converting a number to a string with base 16: To convert a number to a string with base 16, we will have to call the toString() method by passing 16 as a parameter.




            
    <script type="text/javascript">
        var num=213;
        document.write("Output : " + num.toString(16));          
    </script>

    Output:

    Output : d5

  4. When no parameter is passed: If the toString() method is called without passing any parameter then the number will be converted to string without change in BASE. Below is the program to illustrate this:




    <script type="text/javascript">
        var num=213;
        document.write("Output : " + num.toString());          
    </script>

    Output:

    Output :213

Supported Browsers:

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

JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.




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