Documentation Expression language

This operation joins array elements with a string followed by operation character.

Let's say the have the following JavaScript array:

fruits = ['Mango', 'Banana', 'Annona', 'Grape'];

To join array elements with comma we can use the following expression:

${fruits&,}

The & is an operation special character and the comma is delimiter.

Now let's join array elements with *** ( 3 stars ).
The star character is reserved for Mandatory value operation, therefore we need to escape each star:

${fruits&\*\*\*}

Additionally you can use a \n and \t characters for array items delimiter.
For example you can join array elements with LF character:

${fruits&\n}

You can also join array elements with a delimiter provided as expression:

${fruits&${myDelimiter}}