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Mar 9th, 2019
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  1. var arraystring = ['test', 'cat', 'meow'];
  2. checkEarraystring(arraystring,letter = prompt("Введите букву"));
  3.  
  4. function checkEarraystring(arraystring,letter = prompt("Введите букву")){
  5.     var arr = [];
  6.     for (var i=0; i<arraystring.length;i++) {
  7.         if (arraystring[i].indexOf(letter) !== -1){
  8.             arr = arraystring[i];
  9.              alert (arr);  
  10.         }
  11.     }
  12.     return arr;
  13. }
  14. alert(checkEarraystring(arraystring,letter));
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