How Can I Generate String Hashes in JavaScript Without Server-Side Code?

Hash Generation from Strings in Javascript

Question:
Can I convert a string into a hash format using Javascript without resorting to server-side languages?

Answer:
Yes, Javascript provides the ability to generate hashes from strings through a modified version of the String prototype.

Implementation:
The following code snippet demonstrates how to extend the String prototype to incorporate a hash function:

String.prototype.hashCode = function() {
  var hash = 0, i, chr;
  if (this.length === 0) return hash;
  for (i = 0; i < this.length; i++) {
    chr = this.charCodeAt(i);
    hash = ((hash << 5) - hash) + chr;
    hash |= 0; // Convert to 32bit integer
  }
  return hash;
};

Usage:
With this modified prototype, you can now generate hashes from strings as follows:

const str = 'revenue'
console.log(str, str.hashCode())

This will output the original string followed by its generated hash code.

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