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JavaScript Practice Questions And Answer

Problem: Write a program to find sum of all array elements.
Solution:

            <html>
             <head>
              <script>
               function demo1()
             {
                let marks = [89, 67, 88, 34, 92]
                let sum = 0 
                for(i=0; i<=4; i++)
                {
                 let m = marks[i] 
                 sum = sum + m
                 document.write("<br> "+ m)
                }
                document.write("<br>Total of array = "+sum)
            }
               </script>
             </head>
          <body>
           <input type="button" value="Go" onclick="demo1()" /><br>
          </body>
        </html>

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