JavaScript parsing IF statements with OR clauses

Question

My question is quite simple, if I declare an IF statement with a series of OR clauses, will JavaScript read all ORs or dwell on the first satisfying one?

Thanks in advance.

Answer 1

Stop the first. He called a short circuit

http://en.wikipedia.org/wiki/Short-circuit_evaluation https://developer.mozilla.org/en/JavaScript/Reference/Operators/Logical_Operators

Answer 2

It should only process the first OR, which returns true:

if (a || b || c) { 

}

If a is false, b is true, and c is true, it will process to b.

Answer 3

function foo() {
    return true;
}

function bar() {
    alert("bar");
}

foo() || bar(); // true - no alert
bar() || foo(); // true - alert of "bar"

Answer 4

, or