JavaScript Array join() Method

Below is the example of the Array join() method.

• Example:
  
  

  
  
  

  <script>     function func() {        var a = [ 1, 2, 3, 4, 5, 6 ];        document.write(a.join('|'));     }     func();  < /script>

• Output:

  1|2|3|4|5|6

The arr.join() method is used to join the elements of an array into a string. The elements of the string will be separated by a specified separator and its default value is a comma(, ).

Syntax:

array.join(separator)

Parameters: This method accept single parameter as mentioned above and described below:

• separator: It is Optional i.e, it can be either used as parameter or not.Its default value is comma(, ).

  Return Value: It returns the String which contain the collection of array’s elements.

  Below example illustrate the Array join() method in JavaScript:

  • Example 1: In this example the function join() joins together the elements of the array into a string using ‘|’.

    var a = [1, 2, 3, 4, 5, 6];
    print(a.join('|'));

    Output:

    1|2|3|4|5|6

  • Example 2: In this example the function join() joins together the elements of the array into a string using ‘, ‘ since it is the default value.

    var a = [1, 2, 3, 4, 5, 6];
    print(a.join()); 

    Output:

    1, 2, 3, 4, 5, 6

  • Example 3: In this example the function join() joins together the elements of the array into a string using ‘ ‘ (empty string).

    var a = [1, 2, 3, 4, 5, 6];
    print(a.join(''));

    Output:

    123456

  Code for the above method is provided below:
  Program 1:

  
  

  
  
  

  <script>     function func() {        var a = [ 1, 2, 3, 4, 5, 6 ];        document.write(a.join());     }        func();  </script>

  Output:

  1, 2, 3, 4, 5, 6

  Program 2:

  
  

  
  
  

  <script>     function func() {        var a = [ 1, 2, 3, 4, 5, 6 ];        document.write(a.join(''));     }     func();  </script>

  Output:

  123456

  Supported Browsers: The browsers supported by JavaScript Array join() method are listed below:

  • Google Chrome 1.0 and above
  • Microsoft Edge 12 and above
  • Mozilla Firefox 1.0
  • Safari 1 and above
  • Opera 4 and above

  

  
  
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