Ways to empty JavaScript array

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There are different ways to empty an array in Javascript.

By assigning an empty array 

var numbers =[1,3,5,6];
numbers =[];
By assigning array length to 0. 

var letters = ["a", "b", "c"];
letters.length = 0;
By poping the elements of the array. 

var randomIntegers =[1,4,5,6];
while(randomIntegers.length > 0) {
    randomIntegers.pop();
}
By using .splice()
var cities =["Mumbai","Pune"];
cities.splice(0, cities.length)

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