Regarding JavaScript, when clearing an array, I've found two methods:
myArray.length = 0;
vs
myArray = new Array()
I would guess myArray.length = 0; keeps the reference while myArray = newArray() creates a new reference making previous references void.
What's the difference (if any) between the two methods?
You are correct this time. new Array() creates a new instance of array and assign it to myArray.
myArray.length = 0 empties an old array while myArray still points to the old array.
Btw, it is better to use [] notation than new Array().
I personally always try to use myArray.length = 0; since it actually empties the content of the array.
[] notation than new Array().myArray.length = 0; // Signifies empty array
[1,2,3] // Length of this array is 3
So basically, an array with content is overwritten with an empty array.
You can also use this:
myarray = []; //More simple and elegant!!!
Performance wise: [] is faster than new Array();
As juno already said: new Array() creates a new instance of the array (this array will be of the size mentioned in arguments) and assigns it to myArray.
