Q:

Write a JavaScript program to replace all but the last number of characters with the specified mask character

hamza
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2022-05-18
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Write a JavaScript program to replace all but the last number of characters with the specified mask character. 

JavaScript programming, Programming,
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hamza
2022-05-18
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const mask = (cc, num = 4, mask = '*') =>
  ('' + cc).slice(0, -num).replace(/./g, mask) + ('' + cc).slice(-num);

console.log(mask(1234567890)); 
console.log(mask(1234567890, 3));
console.log(mask(1234567890, -4, '$'));

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