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Nov 17th, 2019
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  1. fields = []// faci un array de inputuri
  2. for(each field) { // pentru fiecare
  3.    if (valid(field)) {
  4.       field.classlist.remove('invalid') // in caz ca o fost gresit
  5.    } else {
  6.      field.classlist.add('invalid');
  7.    }
  8. }
  9.  
  10. in css:
  11. .invalid {
  12.  border: red;
  13. }
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