jQuery: how to use comma as separator for .each loop

I am using the following to loop through all fields with a specific class and add their values to a variable. This works fine so far.

What is the best / fastest way to add a comma as a separator between the values in the variable here BUT avoid having a comma at the beginning or the end of the variable's content ?

The content of the variable in the end should look like this: value1,value2,value3, ...

My function:

var myVariable = '';$('.myClass').each(function(){ myVariable += $(this).val();})

Thanks for any help with this, Tim.

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