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gatsby-plugin-page-progress

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Add a page progress indicator to your Gatsby project 😎 The progress bar moves as you scroll down the page.

Page Progress Example

Useful for blog sites and other reading material so users know how far they’ve read into an article or page.

Install

npm i gatsby-plugin-page-progress

Options Example

Inside gatsby-config.js

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: ["/", { regex: "^/blog" }],
      excludePaths: ["/blog/beep-beep-lettuce"],
      height: 3,
      prependToBody: false,
      color: `#663399`
    }
  }
];

If you’d like the progression bar to appear on all pages of your project, you can simply add the name of the plugin to your plugins array in gatsby-config.js

plugins: ["gatsby-plugin-page-progress"];

Options

includePaths

Required: ❌

Accepts: [string | object]

Default: []

Supports multiple paths. This option enables the plugin to include an array of paths. You can use regex to define multiple path inclusions. See examples below

excludePaths

Required: ❌

Accepts: [string | object]

Default: []

Supports multiple paths. This option enables the plugin to exclude an array of paths. You can use regex to multiple path exclusions. Defining paths to exclude will take precedence over includePath definitions. See examples below

prependToBody

Required: ❌

Accepts: boolean

Default: false

If false, the bar is appended to the <body>. If true, the bar is prepended to the <body>.

height

Required: ❌

Accepts: number

Default: 3

Sets the height of the progress bar.

color

Required: ❌

Accepts: string

Default: #663399

Sets the color of the progress bar.

Examples

Only include the root path:

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: ["/"],
      excludePaths: []
    }
  }
];

Include the root path, plus all paths under the /blog route:

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: ["/", { regex: "^/blog" }],
      excludePaths: []
    }
  }
];

This plugin calls the constructor function for RegExp. That’s why we define any regex that we want to use inside an object. For more information on how to write regular expressions using the RegExp constructor use MDN for reference.

Exclude only the root path:

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: [],
      excludePaths: ["/"]
    }
  }
];

Include the root path, plus every path under the /blog route, but exclude a specific path under /blog:

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: ["/", { regex: "^/blog" }],
      excludePaths: ["/blog/awesome/article"]
    }
  }
];

Include the root path, plus all paths under the /blog route, but exclude all paths under /blog that end with 'react'‘:

plugins: [
  {
    resolve: "gatsby-plugin-page-progress",
    options: {
      includePaths: ["/", { regex: "^/blog" }],
      excludePaths: [{ regex: "^/blog.+react$" }]
    }
  }
];

Remember that exclusions always take precedence over inclusions. In the case above - If the plugin finds any path that begins with /blog and ends with react it will not apply the progress indicator because it already knows to exclude that route 😁 Inversely, if we were on a route under /blog that didn’t end with react, it would apply the progress indicator because the exclusion rule wouldn’t apply to that route.