Javascript copy array to new array [duplicate]

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You can use the .slice method:

var old = ["Apples", "Bananas"];
var newArr = old.slice(0);
newArr.reverse(); 
// now newArr is ["Bananas", "Apples"] and old is ["Apples", "Bananas"]

Array.prototype.slice returns a shallow copy of a portion of an array. Giving it 0 as the first parameter means you are returning a copy of all the elements (starting at index 0 that is)

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