JavaScript - TypedArray toString() Method

Quiz

The JavaScript TypedArray toString() method returns a string representation of the current typed array and its elements. JavaScript calls the toString method automatically when a typed array is to be represented as a text value, e.g. when a typed array is concatenated with a string.

Note − It converts a typed array to a string implicitly, which means that the typed array is automatically changed by the JavaScript engine.

Syntax

Following is the syntax of JavaScript TypedArray toString() method −

toString()

Parameters

It does not accept any parameters.

Return value

This method returns a string representation of the elements of the typed array.

Examples

Example 1

In the following example, we are using the JavaScript Typedarray toString() method to retrieve a string representation of a typed array: [1, 2, 3, 4, 5].

<html>
<head>
   <title>JavaScript TypedArray toString() Method</title>
</head>
<body>
   <script>
      const T_array = new Uint8Array([1, 2, 3, 4, 5]);
      document.write("Typed array: ", T_array);
      
      //using toString() method
      let str = T_array.toString();
      document.write("<br>String representating typed array: ", str);
      document.write("<br>Type of str(after converting to a string): ", typeof(str));
   </script>
</body>
</html>

Output

The above program returns a string representing a typed array −

Typed array: 1,2,3,4,5
String representating typed array: 1,2,3,4,5
Type of str(after converting to a string): string

Example 2

The following is another example of using the JavaScript TypedArray toString() method to explicitly convert the typed array [10, 20, 30, 40, 50, 60, 70, 80] into a string. Additionally, we'll look an implicit method to achieve the same result.

<html>
<head>
   <title>JavaScript TypedArray toString() Method</title>
</head>
<body>
   <script>
      const T_array = new Uint8Array([10, 20, 30, 40, 50, 60, 70, 80]);
      document.write("Typed array: ", T_array);
      
      //using toString() method
      //explicit conversion
      let str = T_array.toString();
      document.write("<br>String representating typed array(explicit): ", str);
      document.write("<br>Type of str(after converting to a string): ", typeof(str));
      
      //implicit conversion
      let new_str = `${T_array}`;
      document.write("<br>String representating typed array(implicit ): ", new_str);
      document.write("<br>Type of str(after converting to a string): ", typeof(new_str));
   </script>
</body>
</html>

Output

After executing the above program, it will return a string representation typed array:

Typed array: 10,20,30,40,50,60,70,80
String representating typed array(explicit): 10,20,30,40,50,60,70,80
Type of str(after converting to a string): string
String representating typed array(implicit ): 10,20,30,40,50,60,70,80
Type of str(after converting to a string): string

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