Verify that each interface in an array includes all of its respective fields - Angular 8

I've recently created a collection of typed interfaces, each with optional fields. I'm wondering if there is an efficient method to verify that all interfaces in the array have their fields filled.
Here's the interface I'm working with:

export interface BibliographicCitation {
  authors?: HTMLCollectionOf<Element>;
  title: string;
  date?: Element;
}

This is how I populate the array:

UPDATE

citations.forEach(citation => {
    if (citation.getElementsByTagName('author').length === 0 &&
        citation.getElementsByTagName('title').length === 0 &&
        citation.getElementsByTagName('date').length === 0) {

        const interfacedCitation: BibliographicCitation = {
           title: citation.textContent.replace(/\s+/g, ' '),
        };

        if (!bibliographicCitations.includes(interfacedCitation)) { 
            bibliographicCitations.push(interfacedCitation); 
        }
    } 
    else {
        const interfacedCitation: BibliographicCitation = {
           authors: citation.getElementsByTagName('author'),
           title: String(citation.getElementsByTagName('title')[0]).replace(/\s+/g, ' '),
           date: citation.getElementsByTagName('date')[0],
        };

        if (!bibliographicCitations.includes(interfacedCitation)) { 
           bibliographicCitations.push(interfacedCitation); 
        }
    }
});

My question now is, how can I confirm that all entered interfaces have their fields filled?

javascriptangulartypescriptangular8

Answer №1

Consider using a variable called isAllProperties and perform the following checks:

let isAllProperties = false;
if (citation.getElementsByTagName('author').length === 0 &&
    citation.getElementsByTagName('title').length === 0 &&
    citation.getElementsByTagName('date').length === 0) {
    // ...
    isAllProperties = true;
} else {

}

if (isAllProperties ) {
    // ...
}

UPDATE:

let isAllProperties = [];
citations.forEach(citation => {
if (citation.getElementsByTagName('author').length === 0 &&
    citation.getElementsByTagName('title').length === 0 &&
    citation.getElementsByTagName('date').length === 0) {

    const interfacedCitation: BibliographicCitation = {
       title: citation.textContent.replace(/\s+/g, ' '),
    };

    if (!bibliographicCitations.includes(interfacedCitation)) { 
        bibliographicCitations.push(interfacedCitation); 
    }
    isAllProperties.push({isAll: true, interfacedCitation});
} 
else {
    const interfacedCitation: BibliographicCitation = {
       authors: citation.getElementsByTagName('author'),
       title: String(citation.getElementsByTagName('title')[0]).replace(/\s+/g, ' '),
       date: citation.getElementsByTagName('date')[0],
    };

    if (!bibliographicCitations.includes(interfacedCitation)) { 
       bibliographicCitations.push(interfacedCitation); 
    }

    isAllProperties.push({isAll: false, interfacedCitation});
}

});

Answer №2

Check out this solution for assistance:

let findAuthor = citation.getElementsByTagName('author');
let findTitle = citation.getElementsByTagName('author');
let findDate = citation.getElementsByTagName('author');
let conditionTitle:any;
const interfacedReference: BibliographicCitation = {
 authors: this.findAuthor ,
 title: this.conditionTitle ,
 date: this.findDate[0]
};
if (this.findAuthor && this.findTitle && this.findDate) {
this.conditionTitle = citation.textContent.replace(/\s+/g, ' ')
    if (!bibliographicReferences.includes(interfacedReference)) { 
     bibliographicReferences.push(interfacedReference); 
    }
} else {
    this.conditionTitle = this.findTitle;
    if (!bibliographicReferences.includes(interfacedReference)) { 
     bibliographicReferences.push(interfacedReference); 
    }
}

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