How do you debug and troubleshoot Sass and CSS issues in Ext JS apps?

1 Use the browser dev tools

The browser dev tools are your first line of defense when it comes to inspecting and modifying your Sass and CSS code. You can access them by pressing F12 or right-clicking on any element and selecting Inspect. The dev tools let you see the computed styles, the inheritance chain, the layout, the box model, the media queries, and the color contrast of your elements. You can also edit your Sass and CSS code on the fly and see the changes reflected in the browser. This can help you identify and fix syntax errors, typos, specificity issues, and layout bugs.

2 Use the Sencha Inspector

The Sencha Inspector is a powerful tool that integrates with the browser dev tools and provides additional features for debugging and troubleshooting Ext JS apps. You can install it as a browser extension or a standalone app. The Sencha Inspector lets you inspect the Ext JS component tree, the data stores, the events, the themes, the performance, and the accessibility of your app. You can also use it to modify your Sass and CSS code and see the changes applied to your app without reloading the page. This can help you fine-tune your styles, optimize your app speed, and ensure your app meets the web accessibility standards.

3 Use the Sencha Cmd

The Sencha Cmd is a command-line tool that helps you create, build, and deploy your Ext JS apps. It also helps you compile and minify your Sass and CSS code, generate sprites and fonts, and create custom themes. You can use the Sencha Cmd to debug and troubleshoot your Sass and CSS code by using some of its commands and options. For example, you can use the --debug option to generate source maps that link your Sass and CSS code to the browser dev tools. You can also use the --watch option to automatically compile your Sass and CSS code whenever you save a file. This can help you speed up your development process and catch errors before they affect your app.

4 Follow some best practices

To avoid and fix Sass and CSS issues in your Ext JS apps, you should follow some best practices. This includes utilizing consistent naming conventions and code formatting for your Sass and CSS files and variables, as well as taking advantage of Sass features such as mixins, functions, and nesting. Additionally, you should use Ext JS variables and mixins to customize your app theme and leverage its built-in features. Media queries and responsive design techniques should also be used to make your app adaptable to different screen sizes and devices. Furthermore, relative units like em, rem, and % should be used for font sizes, margins, and paddings instead of absolute units like px. Furthermore, CSS properties such as flexbox, grid, and transform should be used for layout and alignment instead of floats, margins, and position. Additionally, CSS properties such as transition, animation, and filter should be used for visual effects and interactions instead of JavaScript. Finally, web fonts, SVG icons, and sprites should be used instead of images for icons and graphics. By following these best practices, you can improve your Sass and CSS code quality, readability, maintainability, and performance.

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?