Javascript Funky array mishap

Question

function a() {
  var b = [\"b\"];
  console.log(b);
  //console.log(b.slice());
  b = b.push(\"bb\"); 
}
a();

In a \"perfect\" world you would thin

Answer 1

Confirmation (if needed) of Guffa's answer :

function a() {
  var b = ["b"];
  console.log (b); 
  console.log (' ' + b); 
  console.log (b); 
  console.log (b.toString ()); 
  console.log (b);
  b = b.push("bb"); 
  console.log (b);
}
a();

Chrome outputs :

["b", "bb"]
 b
["b", "bb"]
b
["b", "bb"]
2

Note how every log referencing the object shows the "anomolous" result and each one which requires the evaluation of an expression does not. Note also the final log which shows that b is set to the value value 2, since the value returned by push is the new length of the array.

So, to avoid this issue ensure that each log parameter involves the evaluation of an expression.