recursion-visualization/index.html at master · openlibser/recursion-visualization · GitHub

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<!doctype html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Recursion visualizer</title>
  <script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>

  <style>
  .recursion-step {
    border: 1px solid black;
    margin: 10px 0px;
    transition: all 1s;
  }

  .func-call {
    border: 1px solid black;
  }

  .before-expand {
    position: absolute;
  }

  .return-active {
    border: 1px solid red;
    background-color: #FFF;
  }

  #init-input {
    width: 20px;
  }
  </style>
</head>
<body>

<script id="block-template" type="x-tmpl-mustache">

<pre class="recursion-step" id="{{blockId}}" data-n="{{n}}" data-return-val="{{returnVal}}">
factorial({{n}}) {
  if ({{n}} === 0) { //{{condition}}
    <span id="{{return1Id}}">return 1;</span>
  }
  <span id="{{return2Id}}">return {{n}} * <span class="func-call" id="{{callId}}" data-previd="{{prevId}}" data-n="{{n}}">factorial({{n}} - 1)</span>;</span>
}
</pre>

</script>

<pre id="start-block">
factorial(n) {
  if (n === 0) {
    return 1;
  }
  return n * factorial(n - 1);
}
</pre>

<form id="init">
  factorial(<input type="number" value="5" id="input-value">);
  <input type="submit" value="start">
</form>

<script src="main.js"></script>

</body>
</html>