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JavaScript Number toString() Method

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  • Last Updated : 10 Nov, 2022
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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 the above syntax using the ‘.’ operator. This method will convert a 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.

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

Example: 

Javascript




<script type="text/javascript">
    var num=12;
    console.log("Output : " + num.toString(2));       
</script>


Output:

Output:1100

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. 

Javascript




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


Output:

Output:11010101

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. 

Javascript




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


Output:

Output : 325

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. 

Javascript




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


Output:

Output : d5

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: 

Javascript




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


Output:

Output :213

Supported Browsers:

  • Google Chrome 1 and above
  • Internet Explorer 3 and above
  • Firefox 1 and above
  • Apple Safari 1 and above
  • Opera 4 and above
  • Edge 12 and above

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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