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To check a null value is it correct to do (if (ShipAttention == “”)) or if (!ShipAttention)?

The former is checking specifically for an empty string

The latter is checking for a <https://developer.mozilla.org/en-US/docs/Glossary/Falsy|falsy value>

<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/null#difference_between_null_and_undefined|This comparison of null and undefined> might also be of interest

So if you were really only interested in `null` and not other falsy values, you could do `if (ShipAttention === null)`