JSFiddle - React, Tailwind, and code Playground

by Dogbert

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.1/vue.min.js"></script>
<div id="app">
<p>
  Number of items <input v-model="count">
</p>
<p>
  Hash size (bits) <input v-model="bits">
</p>
<p>
  Expected number of collisions: {{collisions}}
</p>
  
</div>

JavaScript

new Vue({
  el: '#app',
	data: {
		count: 1e6,
    bits: 64,
  },
  computed: {
  	collisions: function() {
    	var n = this.count, d = Math.pow(2, this.bits);
      console.log(n, d);
      return n - d + d * Math.pow((d - 1) / d, n);
    }
  }
});