Wildcard string comparison in Javascript

Question

Let\'s say I have an array with many Strings Called \"birdBlue\", \"birdRed\" and some other animals like \"pig1\", \"pig2\"

Answer 1

This function convert wildcard to regexp and make test (it supports . and * wildcharts)

function wildTest(wildcard, str) {
  let w = wildcard.replace(/[.+^${}()|[\]\\]/g, '\\$&'); // regexp escape 
  const re = new RegExp(`^${w.replace(/\*/g,'.*').replace(/\?/g,'.')}$`,'i');
  return re.test(str); // remove last 'i' above to have case sensitive
}

function wildTest(wildcard, str) {
  let w = wildcard.replace(/[.+^${}()|[\]\\]/g, '\\$&'); // regexp escape 
  const re = new RegExp(`^${w.replace(/\*/g,'.*').replace(/\?/g,'.')}$`,'i');
  return re.test(str); // remove last 'i' above to have case sensitive
}


// Example usage

let arr = ["birdBlue", "birdRed", "pig1z", "pig2z", "elephantBlua" ];

let resultA = arr.filter( x => wildTest('biRd*', x) );
let resultB = arr.filter( x => wildTest('p?g?z', x) );
let resultC = arr.filter( x => wildTest('*Blu?', x) );

console.log('biRd*',resultA);
console.log('p?g?z',resultB);
console.log('*Blu?',resultC);