Ways to confirm my CSS modifications in Chrome Developer Tools

I find myself tweaking the CSS of various elements using dev tools.

After making multiple changes, I often lose track of where I have applied new styles to the elements.

Is there a way to easily compare the current styles with the original styles on the page?

For instance,

<div class='one'> hello </div>
<div class='two'> hello </div>
<div class='three'> hello </div>
<div class='four'> hello </div>
<div class='five'> hello </div>
<div class='six'> hello </div>
<div class='seven'> hello </div>
<div class='eight'> hello </div>

For example, in the above HTML snippet, I have made numerous changes to each element and now I want to apply all those modified values. However, with so many alterations, it becomes challenging to track the differences from the original CSS.

p.s. I am working with React and webpack, therefore, More tools > Changes is not an ideal solution for me.

Answer №1

If you need to access your CSS file modifications, navigate to Sources > YourCSSFile > Local Changes...

You'll find all the alterations you've made in the selected CSS file displayed here.

Keep in mind that the "Local Changes..." link will only show up if there have been actual modifications to the chosen file.

Answer №2

When utilizing Webpack for running css pre-processors, you have the ability to adjust your Webpack configuration to generate source maps for your css. These maps link the generated css file back to the scss/less files, allowing devtools to display the pre-processed files. By following the methods mentioned above, you can easily observe changes in Chrome devtools.

For instance, take a look at this example from the Webpack sass-loader documentation, showcasing how to enable source maps for sass/scss files:

module.exports = {
  module: {
    rules: [
      {
        test: /\.s[ac]ss$/i,
        use: [
          "style-loader",
          {
            loader: "css-loader",
            options: {
              sourceMap: true,
            },
          },
          {
            loader: "sass-loader",
            options: {
              sourceMap: true,
            },
          },
        ],
      },
    ],
  },
};

The less-loader documentation provides similar guidance on configuring source maps for less files.

In addition to css and less files, you can also configure Webpack to generate source maps for your React code, which greatly simplifies debugging. Check out this answer to another question for instructions on setting that up.

It's advisable to only enable source maps during development, not production. The Webpack documentation includes resources on utilizing environment variables in the configuration and configuring for development that might prove helpful.

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