breed_calc() is an open source abstraction of the core algorithm which runs the dragonvale sandbox breeding calculator at https://dvbox.bin.sh/

<script type="text/javascript" src="dragons.js"></script>
<script type="text/javascript" src="calc.js"></script>
<script type="text/javascript">
    var list = breed_calc(d1,d2,beb);
</script>

the arguments d1 and d2 are keys from the dragons.js file, such as Panlong_Dragon, and specify the parent dragons. beb is a boolean value which specifies whether or not bring-em-back is in effect.

for a working example, see https://drouu.github.io/dragonvale-sandbox/

calc.js is free and released to the public domain. https://unlicense.org/