​x
 
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<!DOCTYPE html>
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<title>My Example</title>
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​
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​
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<p id="msg"></p>
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​
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<script>
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  // Returns a random integer between min (included) and max (excluded)
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  function getRandomIntExcludeMax(min, max) {
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    min = Math.ceil(min);
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    max = Math.floor(max);
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    return Math.floor(Math.random() * (max - min)) + min;
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  }
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  document.getElementById("msg").innerHTML = getRandomIntExcludeMax(1, 100);
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</script>