it parses given string and returns 1st number it encounters ( it will replace comas with dots so floats formatted as 12,345 could be 12.345 ( some countries use that ) )

then u can parse returned value as a number / float / int - do what You need with it ;-)

(/[\d.]+/).exec((__PROVIDE_STRING_TO_PARSE__).replace(",", "."))
 
// if u want it to make even more dumb-proof ( like multiple dots/comas "within" the number ) use this:
 
(/[\d]+.?[\d]+/).exec((__PROVIDE_STRING_TO_PARSE__).replace(",", "."))