已完成

Typescript help needed

I have a problem with creating a property "indexOf", to check values in a json data list.

This problem exist for Typescript, Angular 8. I've used this stackblitz for a template:

[login to view URL]

I get this error message: Property 'indexOf' does not exist on type 'ExampleDataSource'.

My code is attached. Only a working solution will be acknowledged !

技能: Angular.js, HTML5, Typescript, JSON

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( 0个评论 ) Esrum, Russian Federation

项目ID: #21621007

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luiswilliam

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SlarkJM

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