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Questions - hasownproperty

hasOwnProperty() is only checking if a certain property exists in a JSON, but doesn't return anything if it doesn't

I keep trying different methods to check if this JSON contains "attributes." In this way I can determine if the given coordinates are outside of wetlands. If they are in wetlands, "attr...
test-img

Jack

javascript

json

arcgis-js-api

hasownproperty

Votes: 0

Answers: 3

Latest Answer

I tested your code and this is the problem. When the coordinates are outside the wetlands, the features array is empty, that means nothing happen in your for loop. So do this instead of checking direc...
test-img

Alex Dev

Avoid recurring 'if' verification to check if an object has property

I do know how to check if a property exists (hasOwnProperty, in, !== undefined, etc). But I don't know how to avoid to perform an action on this property if it doesn't exist. Is there a solution to av...
test-img

Ann MB

javascript

object

properties

conditional-statements

hasownproperty

Votes: 0

Answers: 2

Latest Answer

If you have the right JS version you could set defaults and use the null coalescing opperator https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Nullish_coalescing_operator //...
test-img

devzero

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