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JavaScript hello world program

You can print plain text or html in the html document dynamically with javascript functions 1. document.write() and 2. document.writeln() 
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>JavaScript Lesson1</title>
<script type="text/javascript">
 //Here you can write javascript
</script>
</head>
<body>
<script type="text/javascript">
  document.write("<b>Hello world</b>"Wink;
  document.writeln("<b>Hello world</b>"Wink;
</script>
</body>
</html>

Output

Hello Word Hello Word
  
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Mohammad Towhidul Islam
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