Javascript/Assignment5.html at master · sayam13/Javascript · GitHub

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<html>
<head>
      <title>Javascript</title>
     <h1>Assignment5</h1>
    </head>
<body>
  <script>
     document.write("1.var:-Keyword used for declration of a variable.It can be declared anywhere in codei.e it is a global variable.var is a function scoped");
       document.write("<br/>e.g:-");
        var a,b,c;
        a=6;
        b=5;
        c=a+b;
         document.write("<br/>",c);

    document.write("<br/>2.let:-It is used to set the scope of variable.let is a block scoped and it is a local variable.Not compulsory to initialise during declaration.");  document.write("<br/>e.g:-");
     document.write("<br/> e.g");
     var name="vighnesh";
       {
           let name="sahil";

           document.write("<br/>",name);
       }

       document.write("<br/>3.const:-const means constant variable.The value is fixed and cannot be changed.The value should be given initialisation.It cannnot change the elements of array but the can push the elements in array");
        document.write("<br/>e.g:-");
        const x=5;
          document.write("<br/>",5);
         /* const no=['one','Two','Three'];
          no.push('four');
          document.write("<br/>",no);*/
          </script>
          </body>
          </html>