JSFiddle - React, Tailwind, and code Playground

by Harsh Kansagara

HTML

<input type="text" placeholder="String" class="stringValue">
<textarea class="hashid"></textarea>
<button class="generate">Generate</button>

JavaScript

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;
};

document.querySelector('.generate').onclick = function(){
	document.querySelector('.hashid').value = document.querySelector('.stringValue').value.hashCode();
};