All of us need to create objects or arrays to store different things at different times.
One of the important things in this section is to create a proper ID that will make the array more regular and easier to access to each component.
In different cases and depending on different conditions, the process of ID production may be different, But sequential ID generation is mostly used.
This statement creates the next target ID by taking the length of the array and obtaining ID of the last index.
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This article was originally published on The Dev.to on March 15, 2020 and was written by Mohsen Fallahnejad.