Rewrite Array From The Function. Using Argument Reference

Can you please explain how to worship JavaScript gods and work around this one. The reason for this is to create a pattern that will have filter logic and instead of declaring exp

Solution 1:

From what I understand, you want to pass your variable by reference. It is sad that Javascript pass array as value. There are a few ugly workaround.

vararray = {v: ['old'] };

functionmanageArray(targetArray) {
  targetArray.v = ['new'];
}

manageArray(array);

or

vararray = ['old'];

functionmanageArray(targetArray) {
    return ['new'];
}

array = manageArray(array);

For further reading:

• Pass Variables by Reference in Javascript

Solution 2:

You'll be able to access the array if you have your function return it:

var array = ['old'];
    
functionmanageArray(targetArray) {
  targetArray = ['new'];
  return targetArray
}

array = manageArray(array);
alert(array);