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what's the difference between ( | ) and ( || ) in javascript?

I’ve seen this in a couple examples here but I never fully understood what it’s supposed to do. Can anyone give me a simple example please?

Answer 1

In Javascript, the | operator is a bitwise operators (in contrast to the || operator which is a logical operator).

It convert each operand to a 32-bit number, and performs a bitwise or between them.

Example of expressions and their results:

1 | 1 === 1
1 | 2 === 3
1.99 | 2.99 === 3

Reference: http://developer.mozilla.org/en/JavaScript/Reference/operators/bitwise_operators