How do I put a variable in a string using javascript

Question

How do I put a variable in a string in JavaScript?

Example:

$(\'#contactForm\').animate({\"marginLeft\": \"+=680px\"}, \"slow\");

I wou

Answer 1

You can use the + operator to concatenate your value in a variable to the "+=" string:

$('#contactForm').animate({"marginLeft": "+=" + size}, "slow");