What is the method for determining the number of properties that share a common value?

After fetching a JSON object from an API, I am currently going through the result set and constructing a ticket object. Here is the link to the JSON data: 

 data.ticket.seating.forEach((seat: any) => {
                this.listings.push({ section: seat.section, selling: data.price.selling, amount: data.ticket.amount, type: data.ticket.type, row: seat.row });
                this.barChartLabels.push(data.price.selling);
                this.barChartData[0].data.push() // how to push the count of tickets which has the same price.
            });

How can I determine the number of tickets with the same price in the code snippet above? Additionally, how can I identify the maximum price among all tickets?

javascriptangulartypescript

Answer №1

To create a hash table, you'll need to associate keys with ticket prices and values with arrays of tickets having that price. For instance:

let priceTable = {};
entries.forEach((data) => {
    if (!priceTable.hasOwnProperty(data.ticket.price.original))
        priceTable[data.ticket.price.original] = [];
    priceTable[data.ticket.price.original].push(data);
});

After executing the above code, iterate through the keys in priceTable to find the maximum value:

let maxPrice = 0;
for (let price in priceTable) {
    if (priceTable.hasOwnProperty(price)) {
        if (price >= maxPrice) {
            maxPrice = price;
        }
    }
}

You can then use this max value to display the list of tickets with the highest price: priceTable[maxPrice]

This example assumes that data.ticket.price.original contains valid numerical data.

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