Guide on updating a variable to the following string within an array

Snippet:

months = [
    'January',
    'February',
    'March',
    'April',
    'May',
    'June',
    'July',
    'August',
    'September',
    'October',
    'November',
    'December'
  ];

currentMonth: String;

this.currentMonth = this.months[date.getMonth()];

nextMonth() {
    this.currentMonth = ...
}

How can I implement the nextMonth function to update the value of currentMonth? For instance, if its current value is 'August', what logic should I incorporate in my function so that it increments its value by 1, resulting in 'September'?

Answer №1

To find the next month, you can use the indexOf method to search for currentMonth and then add 1:

nextMonth = months[(months.indexOf(currentMonth) + 1) % 12];

Alternatively, it may be more efficient to keep track of the current month as a number in currentMonth. Then, incrementing the month is as simple as:

currentMonth = (currentMonth + 1) % 12;

You can retrieve the name of the current month by referencing the months array only when needed:

currentMonthName = months[currentMonth];

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