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Discover how to creatively use template literals to set zIndex in Material-UI Snackbar components, ensuring they render above dialogs.
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This video is based on the question https://stackoverflow.com/q/64665802/ asked by the user 'Alberto Manuguerra' ( https://stackoverflow.com/u/13260401/ ) and on the answer https://stackoverflow.com/a/64667163/ provided by the user 'aktoriukas' ( https://stackoverflow.com/u/13441937/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Override zIndex in Material-UI Snackbar with !important

When working with user interfaces in React, particularly with Material-UI components, managing the stacking order of elements often becomes a crucial aspect. A common challenge developers encounter is ensuring that certain components, like snackbars, display above others, such as dialog boxes. In this post, we will explore one such problem and a solution to effectively manage z-index using CSS in Material-UI.

The Problem

Imagine you are developing a React application where you have a Dialog component that is essential to user interactions. This Dialog has a zIndex of 1500, while your custom Snackbar component, which utilizes Material-UI, has a default zIndex of 1400. The aim is to ensure that the Snackbar appears above the Dialog (hence, a zIndex of 1501 is required).

However, the challenge arises when the expected changes to the Snackbar's zIndex do not seem to take effect unless you override styles using !important, which is not permitted in certain contexts.

Example of the Current Situation

Here’s an overview of your current setup using Material-UI's makeStyles:

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

Why You’re Stuck

The results are frustrating due to the restriction of using !important in this way. In essence, your custom styling does not override the default behavior as expected, leading to the Snackbar appearing behind the Dialog rather than above it.

The Solution

To navigate around this limitation, we can leverage template literals in JavaScript to effectively control our zIndex. This approach enables us to construct a dynamic style where the !important flag can be incorporated directly.

Implementation Steps

Here’s how you can alter your code using template literals:

Define a Variable for zIndex:
Start by establishing a variable that holds the desired zIndex value.

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

Apply Template Literals in Your Styles:
Next, in your makeStyles, use template literals to set the zIndex.

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

This technique allows you to dynamically assign a zIndex while retaining flexibility and clarity in the code.

Conclusion

Using template literals not only resolves the zIndex issue in your Snackbar component but also maintains the standards of CSS styles that should be avoided with !important where possible. It's a neat trick that fosters clean, understandable code while achieving the desired functionality in your React applications.

If you encounter similar problems with zIndex management in your UI components, remember this solution. It exemplifies the power of JavaScript within CSS management, helping you create a robust user interface that functions seamlessly across components.

Happy coding!