Angular property ‘name’ comes from an index signature, so it must be accessed with [‘required’]

Angular property ‘name’ comes from an index signature, so it must be accessed with [‘required’]

Getting error “property ‘required’ comes from an index signature, so it must be accessed with [‘required’]”; The property ‘name’ is not explicitly defined in the component’s class, rather it is being accessed through the index signature. To fix this error, you can either explicitly define the property ‘name’ in the component’s class, or you can use the [‘name’] syntax to access the property.

Let, you have a form in your angular apps, and validate your form data; like the following:

<div class="form-group">

    <label for="name">Name</label>

    <input 

        formControlName="name"

        id="name" 

        type="text" 

        class="form-control">

    <div *ngIf="f.name.touched && f.name.invalid" class="alert alert-danger">

        <div *ngIf="f.name.errors && f.name.errors.required">Name is required.</div>

        <div *ngIf="f.name.errors && f.name.errors.minlength">Name should be 3 character.</div>

    </div>

</div>

And you occur error property ‘name’ comes from an index signature, so it must be accessed with [‘required’], you can either explicitly define the property ‘name’ in the component’s class, or you can use the [‘name’] syntax to access the property, like following:

<div class="form-group">
    <label for="name">Name</label>
    <input 
        formControlName="name"
        id="name" 
        type="text" 
        class="form-control">
    <div *ngIf="f['name'].touched && f['name'].invalid" class="alert alert-danger">
        <div *ngIf="f['name'].errors && f['name'].errors['required']">Name is required.</div>
        <div *ngIf="f['name'].errors && f['name'].errors['minlength']">Name should be 3 character.</div>
    </div>
</div>

That’s it; you have learned how to fix the error property ‘required’ comes from an index signature, so it must be accessed with [‘required’].

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AuthorAdmin

Greetings, I'm Devendra Dode, a full-stack developer, entrepreneur, and the proud owner of Tutsmake.com. My passion lies in crafting informative tutorials and offering valuable tips to assist fellow developers on their coding journey. Within my content, I cover a spectrum of technologies, including PHP, Python, JavaScript, jQuery, Laravel, Livewire, CodeIgniter, Node.js, Express.js, Vue.js, Angular.js, React.js, MySQL, MongoDB, REST APIs, Windows, XAMPP, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL, and Bootstrap. Whether you're starting out or looking for advanced examples, I provide step-by-step guides and practical demonstrations to make your learning experience seamless. Let's explore the diverse realms of coding together.

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