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<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript Global Functions</h2>
<h2>parseInt()</h2>
<p>The global JavaScript function parseInt() converts strings to numbers:</p>
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<p id="demo"></p>
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<script>
document.getElementById("demo").innerHTML = 
  parseInt("-10") + "<br>" +
  parseInt("-10.33") + "<br>" +
  parseInt("10") + "<br>" +
  parseInt("10.33") + "<br>" +
  parseInt("10 6") + "<br>" +  
  parseInt("10 years") + "<br>" +  
  parseInt("years 10");  
</script>
​
</body>
</html>
​
​
​