Javascript const Example

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<head>
  <title>Javascript const Example</title>
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   <h1>javascript variable declaration</h1>
   <p>In the following example "const" keyword declare a variable</p>
   
    <script>
    const class1 = 6;
    const class2 = 6;
    let std1 = class1 + class2;
    document.write(std1) 
   </script>       
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