Difference between Array.length = 0 and Array =[]?

Question

Can some one explain the conceptual difference between both of them. Read somewhere that the second one creates a new array by destroying all references to the existing arra

Answer 1

Are you sure it really works?

I did a little experiment here, and trying to "add" an Array with a String resulted in a string.

function xyz(){
    var a = [];
    alert(typeof(a+$("#first").html()));
    // shows "string"
}

http://www.jsfiddle.net/4nKCF/

(tested in Opera 11)