javascript - Converting ampersand (&) and blank space to a dash (-) in URLs using regex -

with code below, have converted following names url such

• love & relationships http://domain.org/love-relationships

• career & guidance http://domain.org/career-guidance

  filter('amptodash', function(){     return function(text){         return text ? string(text).replace(/ & /g,'-'): '';     }; }).filter('dashtoamp', function(){     return function(text){         return text ? string(text).replace(/-/g,' & '): '';     }; }) 

however, have new set of names , can't figure out how both @ same time.

• being human http://domain.org/being-human

• competitive exams http://domain.org/competitive-exams

  filter('amptodash', function(){     return function(text){         return text ? string(text).replace(/ /g,'-'): '';     }; }).filter('dashtoamp', function(){     return function(text){        return text ? string(text).replace(/-/g,' '): '';     }; }) 

how combine both regex codes can work hand in hand?

it looks want change instances of ampersand leading or trailing white-space or white-space single hyphen. if so, use following expression :

// replace strings have leading , trailing spaces or series of spaces string(text).replace(/(\s+&\s+|\s+)/g,'-'): ''; 

example

var input = ['love & relationships', 'career & guidance', 'being human', 'competitive exams'];  (var in input) {    var phrase = input[i];    console.log(phrase + ' -> ' + phrase.replace(/(\s+&\s+|\s+)/g, '-'));  }