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JavaScript forEach() Method


The forEach() method calls the function once for each element of the array.

Syntax 
var a=[1,2,3,4,5];
a.forEach(function(value,index){
  console.log(value);
});

The following example shows, how to sum all input values using JavaScript forEach() method.

Example 
<html>
  <body>
    <p><input type='text' class='txt'></p>
    <p><input type='text' class='txt'></p>
    <p><input type='text' class='txt'></p>
    <p><input type='text' class='txt'></p>
    <p><input type='text' class='txt'></p>
    <input type='button'  value='Get Total' onclick='get_total()'>
    <p id='output'></p>
    <script>
      function get_total(){
        var a=document.querySelectorAll(".txt");
        var sum=0;
        a.forEach(function(ele){
          sum+=Number(ele.value);
        });
        document.querySelector("#output").innerText="Toatl is "+sum;
      }
      
      var a=[1,2,3,4,5];
      a.forEach(function(value,index){
        console.log(value);
      });
    </script>
  </body>
</html>
Try it Yourself

Demo