JS.10.2 Function Definition

The 'function' keyword introduces a new function in the global scope. Once a function is defined, it can be called in other parts of the script.

function sum(array1) {

  var total = 0;

 

  for(var idx = 0; idx < array1.length; idx++) {

    total += array1[idx];

  }

 

  return total;

}

 

var total = sum(array2);

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