ANDing javascript objects together
- by Jonas
I ran across this chunk of code (modified) in our application, and am confused to how it works:
function someObject()
{
this.someProperty = {};
this.foo =
{
bar:
{
baz: function() { return "Huh?" }
}
};
this.getValue = function()
{
return (this.someProperty && this.foo.bar && this.foo.bar.baz && this.foo.bar.baz()) || null;
}
}
function test()
{
var o = new someObject();
var val = o.getValue();
alert(val);
}
when you call the test() function, the text "Huh?" is alerted. I'm not sure how the result of getValue is returning that, I would've thought doing A && B && C && D would have returned true, rather than the value of D.
