[KidsKilla]

var x = 'aabbaaa<span>babbab</span>abbbaa<span>bbbaaa</span>baaab'.replace(/<span>.*?<\/span>/g, '')
alert(x)

var x = 'aabbaaa<span>babbab</span>abbbaa<span>bbbaaa</span>baaab'.split(/<span>.*?<\/span>/)
alert(x)