How to Remove the Last Comma from JSON for Vue.js Apps

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The Problem

Imagine you've fetched a JSON string that contains a field for countries, but the data is incorrectly formatted with trailing commas, like this:

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The Solution

Step 1: Splitting the String

First, you need to obtain the string that contains the countries. With this string, you can split it into an array using the comma as a delimiter. This will help you separate each country into its own element.

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Step 2: Filtering Out Empty Elements

After splitting the string, you might end up with empty string elements in your array (due to the trailing comma). To remove these empty elements, you can utilize the filter method:

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Step 3: Modifying Elements (if necessary)

If you wish to replace specific countries (like 'france' with 'XXXXXX') in the filtered array, you can use the map method:

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Step 4: Logging the Result

Finally, you can log the modified countries array to see the results of your operation:

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Complete Code Example

Here’s how the complete code looks when you put all steps together:

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Conclusion