Dealing with undefined state in ngClass within Angular applications

My goal is to apply a class based on two objects at once.

<div class="col" [ngClass]="{'d-none':item.FinancialDetails?.length===0 || item.FinancialDetails===undefined || itemFinancials===false }">
    <app-financials [financials]="item.FinancialDetails"></app-financials>
</div>

As shown above, I am now checking both the length and undefined conditions for the object FinancialDetails because only using length did not produce the expected result.

Is there a way to combine these first two conditions into one? Specifically, combining the length and undefined condition.

angulartypescript

Answer №1

Harness the capabilities of the Secure Operator (?). Take a look at the code snippet below:

<div class="row" [ngClass]="{'d-none': item?.AccountDetails?.length === 0 || !itemAccounts }">
    <app-accounts [accounts]="item.AccountDetails"></app-accounts>
</div>

Make adjustments only to the single condition - 

item?.AccountDetails?.length === 0

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