The object type in Typescript prohibits direct access to its properties

Currently, I am facing an issue while trying to define a variable with the Object type and initialize it with a property. When attempting to access that property, an error message 'Property ____ does not exist on type Object' is displayed. I have researched this problem and discovered there are 3 types of objects: object, Object, and {}. I can successfully access my properties using {} but encounter issues with object and Object.

export class customDirective {
    configg:Object={
        qSelector:'.card-text'
    };
    @HostListener('mouseover') onmouseover(){
        var element =this.el.nativeElement.querySelector(this.configg.qSelector);
        this.ren.setElementStyle(element, 'display', 'block');
        this.isHovering = true;
    }
}

Answer №1

Utilize square brackets to access properties of an object

For example, use this.configg['qSelector'] instead of this.configg.qSelector

export class customDirective {
    configg:Object={
        qSelector:'.card-text'
    };
    @HostListener('mouseover') onmouseover(){
        var element =this.el.nativeElement.querySelector(this.configg['qSelector']);
        this.ren.setElementStyle(element, 'display', 'block');
        this.isHovering = true;
    }
}

Answer №2

Entity is a specific category: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Entity. It contains predefined attributes, and description is not one of them.

If you want to create a custom entity with dynamic properties in TypeScript without encountering errors, you can utilize the any type (or omit the type declaration entirely):

properties: any = {
    description : 'Custom Description'
};

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