• joneskind@lemmy.world
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    6 months ago

    In the case of a non-existing property, the value would be undefined rather than null.

    And while == and != exist in JavaScript, most linters will throw an error and require a === and !== instead as they should be avoided.

    null == undefined // true
    null === undefined // false
    

    Besides, null is a perfectly valid value for a property, just as 0. Working with API Platform, I couldn’t tell the number of times I used this kind of statement:

    if (property || property === null) {
      // do some stuff
    }
    

    Probably just as much as

    if (property || property === 0) {
      // do some stuff
    }