topic Re: findIndex Usage for the Array in Application Development and Automation Discussions

findIndex Usage for the Array

former_member492955 — Fri, 16 Apr 2021 10:15:36 GMT

There is an array :

Array: this.getView().getModel("objects").getProperty("/developmentObjects")

I want to find the index in the array, but there are two parameters that should be equal:

Array.findIndex( developmentObject => (developmentObject.microserviceId == microserviceId && developmentObject.objectName == objectName));

The microserviceId and the objectName should bot fulfill the value.

From my coding, the return value is -1.

But this development object is really in the table

How can I change the sentence?

Re: findIndex Usage for the Array

cris_hansen — Fri, 16 Apr 2021 10:57:19 GMT

Dear Bella,

Maybe you can check this page for an working example.

This tutorial might help too.

I also would debug the code or use the console to find the values being evaluated by findIndex and see why the result is -1.

Kind regards,

Cris

Re: findIndex Usage for the Array

former_member492955 — Mon, 19 Apr 2021 06:05:35 GMT

Dear cristiano.hansenn

Thanks for your reply, I checked the page, but all the example provide only one parameter.

It is ok for my example if I only set one parameter:

Array.findIndex( developmentObject => developmentObject.uuid == uuid );

But when I change it to fulfill two conditions, then the result will be -1 for my example:

Array.findIndex( developmentObject => (developmentObject.microserviceId == microserviceId && developmentObject.objectName == objectName));

I can find the object in the array, but the findindex result is -1, I think maybe I have some syntax error.

Re: findIndex Usage for the Array

cris_hansen — Mon, 19 Apr 2021 15:19:27 GMT

Dear Bella,

Have you tried:

Array.findIndex( developmentObject => ((developmentObject.microserviceId == microserviceId) && (developmentObject.objectName == objectName)));

Maybe you can print the values, just to be sure that the values are the expected ones.

I'll see whether I find an example with two conditions.

Regards,

Cris

Re: findIndex Usage for the Array

catano — Thu, 22 Apr 2021 12:46:54 GMT

Hi bella.fang,

Could you please share example data of your model (without sensitive information)?

Especially the developmentObjects part.

The syntax you are using is correct: Arrow function expressions - JavaScript | MDN

Regards,

Peter

Re: findIndex Usage for the Array

former_member492955 — Mon, 26 Apr 2021 06:27:02 GMT

Dear cristiano.hansenn，

I found my function is correct, there is only incorrect objectName in my functtion,

Array.findIndex( developmentObject => (developmentObject.microserviceId == microserviceId && developmentObject.objectName == objectName));

Thanks