map Transforms Items
map Transforms Items
map creates a new array by transforming each item from the original array. The callback decides what each new item should become.
The original array is not changed. That makes map a good fit when UI code needs display labels, URLs, or view models derived from existing data.
Your task: Use map to create topicLabels from topics. Each label should include the topic name and its position number for display.
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map Transforms Items
map creates a new array by transforming each item from the original array. The callback decides what each new item should become.
The original array is not changed. That makes map a good fit when UI code needs display labels, URLs, or view models derived from existing data.
Your task: Use map to create topicLabels from topics. Each label should include the topic name and its position number for display.