Puzzle: Ensuring all properties of JavaScript objects within an array are defined

Consider the vue.js object provided below:

FormattedData: Object
    1: Object
        approved: true
    2: Object
        approved: undefined
    3: Object
        approved: false
    4: Object
        approved: true

Seeking a more effective and concise method to loop through the approved property of each object within the main object, returning false if any values are undefined.

Current solution in place:

checkAllApproved() {
    let allApproved = false;
    for(let design in this.orderInfo.FormattedData) {
        if(this.orderInfo.FormattedData.hasOwnProperty(design)) {
            allApproved = this.orderInfo.FormattedData[design].approved;
        }
        if(typeof allApproved == 'undefined') {
            return false;
        }
    }
    return true;
}

Answer №1

Array.prototype.some can be utilized to check if any element in the array meets a specific condition.

vue_data.some(({approved}) => approved === undefined);

let vue_data = [{approved: false},{approved: undefined},{approved: true}],
vue_data2 = [{approved: false},{approved: true},{approved: true}],

r = vue_data.some(({approved}) => approved === undefined),
r2 = vue_data2.some(({approved}) => approved === undefined);


console.log(r ? "data=>something is undefined" : "data=>everything is defined");
console.log(r2 ? "data2=>something is undefined" : "data2=>everything is defined");

Answer №2

verifyAllApproved() {
    return Object.values(this.orderInfo.FormattedData).every(({approved})=>
        typeof approved !== 'undefined')
}

The every() method will only return true if the function, which extracts the {approved} property from each object, returns true for all items in the array created using

Object.values(this.orderInfo.FormattedData)
. This array is generated from all the values of the this.orderInfo.FormattedData object.

Learn more about methods such as Object.values() and every().

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