basic_math-add_or_subtract_7kyu_test.html

<html>
<head>
  <script type="text/javascript" src="basic_math-add_or_subtract_7kyu.js"></script>
</head>
<body>
  <h1>Verifiche:</h1>
<script type="text/javascript">
  document.write("<br>" + calculate("1plus2plus3plus4") + " = 10<br>");
  document.write("<br>" + calculate('1minus2minus3minus4') + " = -8<br>");
  document.write("<br>" + calculate('1plus2plus3minus4') + " = 2<br>");
  
</script>
</body>
</html>