Size of subarray in a multidimensional array

Currently, I am working with an object where I am inserting integers, strings, and arrays into one main array. My goal is to determine the length of a specific array that is located within this main array.

Below is the code I am using:

var all_categories = [];

        all_categories.push({
            title: theTitle,
            id: theId,
            sub: subcategories
        });

I am aware that the general method for getting the length of an array is by using all_categories.length. However, attempting to access the length of a specific array within 'sub' like all_categories[0].sub[0].length does not work due to the function's non-existence.

Any suggestions for finding a solution or implementing a workaround?

javascriptarrays

Answer №1

When you use the statement all_categories[0].sub[0].length, it is specifically referring to the length of the initial item in the array called sub.

If you want to check the total length of the array, you need to utilize the following syntax:

all_categories[0].sub.length

Answer №2

If you're looking to determine the length of the array called subcategories, make sure to remove the second [0]. The goal is to find out how many subcategories there are, not just the length of the first one.

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