# The logical OR operator in JavaScript: ||

The logical OR operator in JavaScript consists of two pipe symbols together: ||.

It is used when you want to check if at least one of the given comparisons evaluates to true.

Consider the following task: You need to write a program in JavaScript which will return true if the value of the currentTime variable is not between 9 and 17. Put differently, your code needs to console.log true if the value of the variable currentTime is either less than 9 or greater than 17.

Here's a solution:

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var currentTime = 7;
console.log(currentTime < 9 || currentTime > 17);
In line one of the code I assign the number 7 to the variable currentTime.

On line two, I console log the result of checking if either currentTime < 9 or currentTime > 17 will evaluate to true.

It's the same as this:

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var currentTime = 7;
console.log(true || false);
Here are the rules of how the || operator evaluates given values:

console.log(true || true) will output: true

console.log(true || false) will output: true

console.log(false || true) will output: true

console.log(false || false) will output: false

The logical OR operator will always return true, except when both sides evaluate to false. In other words, for the logical OR operator to return false, the results of both comparisons must return false.