Question

How to pass array to function and change the array values in function with JavaScript

Answer 1

function f(arr) {
  arr[0] = 99;
}

   
var arr = new Array(1, 2, 3);
   
f(arr);   

for (var i = 0; i < arr.length; i++)   
     document.write(arr[i] + " ");

    
  
/*
run:
  
99 2 3 
  
*/
   

 

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