Saw this recently in code and was surprised that it worked but it's
pretty cool.
a = foo;
b = bar;
c = a || b;
trace(c);
-- foo
a = 0;
// or a = ;
// or a = false;
// or a = null;
// or a is undefined
b = bar;
c = a || b;
trace(c);
-- bar
It will return b if a is an empty string, false, null,
Hello :)
if you test this code you can understant easily this feature :
1 - first example
var a = toto ;
var b = (a != undefined) ;
if ( b )
{
trace(a exist : + a) ;
}
2 - second exemple
var a = toto ;
if ( a )
{
trace(a exist : + a) ;
}
You can show the variable a in a
SSB a b -- returns true if a and b are both true, false otherwise
By my tests a b returns b if a and b are both resolves true. If a
and/or b resolves false then it returns that value, which is first
resolves false:
if a is false and b is false = a
if a is false and b is true = a
if a is true
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