Is there a clean way to write multi-line statements in JavaScript?

Question

Possible duplicate:
Javascript multiline strings

I am a php developer, very new to js. In php, I use heredoc for multi-line values ​​of variables or print statements. In js, is there a way to easily write them without resorting to dirty code, for example:

var animals = 'dog'+ 'cat'+ 'bird'+ etc...