text: var cl = console.log
  var villes = ['nantes', 'paris', 'saint-nazaire', 'angers', 'le mans']
  
  villes.forEach(function(element){cl(element)})
  
  cl(villes.every(function(element){
      return element.includes('a')
  }))
  
  cl(villes.some(function(element){
      return element.includes('-')
  }))
  
  var lettreADansToutesLesVilles = villes.filter(function(element){
      return !element.includes(' ') && !element.includes('-')
  })
  
  cl(lettreADansToutesLesVilles)
  
  var majVilles = villes.filter(function(element){
      return element.substr(element.length - 1) == 's'
  }).map(function(element){
      return element.toUpperCase()
  })
  
  cl(majVilles)