How to Fix 'Unexpected Template String Expression no-template-curly-in-string' Error in React?

Learn how to resolve the "Unexpected template string expression `no-template-curly-in-string`" error in React applications and enhance your development workflow.
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How to Fix "Unexpected Template String Expression no-template-curly-in-string" Error in React?

If you’re working with React and encounter the error "Unexpected template string expression no-template-curly-in-string," it can be confusing, especially if you're less familiar with JavaScript's template literals and string expressions. This common error usually arises from how template strings are misinterpreted in your code.

Understanding the Error

The error message "Unexpected template string expression no-template-curly-in-string" indicates that there is an issue with how a template literal is being used. Template literals in JavaScript allow for embedded expressions, which are denoted using ${} syntax inside backticks (`). However, if the ESLint rule no-template-curly-in-string is enabled, it will flag any string that uses ${} within it as an error because it expects the expression to be evaluated as a regular string and not a template literal.

Common Scenarios Leading to This Error

Hardcoded Strings: If you’ve copy-pasted some string code that includes ${} without changing it to a template literal.

Dynamic String Concatenation: Attempts to dynamically create strings using template expressions without backticks.

Example of Incorrect Usage

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This string will trigger the no-template-curly-in-string error because it uses the ${} syntax without proper backticks.

How to Fix the Error

Modify the String Syntax

The correct way to write the string in a template literal is to use backticks:

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

In this case, ${name} is evaluated as a variable inside the template literal.

Disable the ESLint Rule (Optional)

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However, it’s generally recommended to keep this rule enabled to avoid potential errors and maintain code consistency.

Conclusion

Understanding and fixing the "Unexpected template string expression no-template-curly-in-string" error in React involves correctly using template literals for dynamic strings. By adhering to proper syntax and utilizing backticks for template expressions, you can prevent such errors and ensure your code executes as intended. Occasionally, modifying ESLint rules may be necessary, but it should be done with caution.

By mastering these small aspects, you can streamline your React development process and write cleaner, error-free code.