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<!DOCTYPE html>
<html>
<body>
<h2>JavaScript Variables</h2>
<p>Strings are written with quotes.</p>
<p>Numbers are written without quotes.</p>
<p id="demo1"></p>
<p id="demo2"></p>
<p id="demo3"></p>
  
  <p id="demo4"></p>
<script>
var number = 10;
var secondNumber = 5;
var stringNumber = "10";
var myString1 = "Roxo";
var myString2 = ".ir";
  
  
var test1 = number + stringNumber;
var test2 = test1 + 10;
  
  document.getElementById("demo4").innerHTML = test2;
document.getElementById("demo1").innerHTML = number + secondNumber;
document.getElementById("demo2").innerHTML = number + stringNumber;
document.getElementById("demo3").innerHTML = myString1 + myString2;
</script>
</body>
</html>
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Amir-ZMpro
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