How to Pass Data from Node.js to Local JavaScript, Keeping Array Capabilities

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The Problem

Here’s a typical scenario you might encounter:

Yet when you try to use these results in your local JavaScript, you face issues like the first item "is not defined."

The Solution

Step 1: Query the Database

Here is an example of querying your database:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Using the Data in EJS

When you render your template, ensure that you use <%- instead of <%= to output listResults. This prevents escaping the data and ensures it remains usable as valid JavaScript.

[[See Video to Reveal this Text or Code Snippet]]

Explanation of Key Changes

JSON.stringify: This method converts your JavaScript array to a JSON string, which can easily be embedded in HTML. It ensures that the array structure is preserved when it's passed to the client-side script.

Use of <%- Instead of <%=: Using <%- will output the raw string without escaping, allowing JavaScript to interpret the JSON string as an array.

Verifying the Solution

After these changes, your array listWords should work seamlessly, showing all elements as expected without any errors:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

If you have encountered similar issues or have any questions, feel free to leave your comments below!