# Icarus User Guide - Other Plugins

This article covers other plugins supported by Icarus 3.

## Gallery

**Installation Guide**

The gallery plugin of Icarus contains both lightGallery and
Justified Gallery extensions.
To enable it, set `plugins`

> `gallery`

to `true`

in your theme configurations.

1 | plugins: |

Additionally, in order to use Justified Gallery, wrap your images with the `<div class="justified-gallery">`

and `</div>`

HTML tag pair.
Also, if you are using Markdown syntax to include images, add additional empty lines between the HTML tags and
Markdown tags.
For example, the Markdown code of the gallery preview below is

1 | <div class="justified-gallery"> |

Meanwhile, we can use pure HTML to create Justified Galleries as well. In this case, we will not need the empty lines between HTML tags.

1 | <div class="justified-gallery"> |

**Preview**

Here is an image grid created by Justified Gallery. You can also view the full image using lightGallery by clicking on any image.

## KaTeX

**Installation Guide**

You can use the KaTeX plugin to render \(\TeX\) expressions.
To enable KaTeX, please set `plugins`

> `katex`

to `true`

in your theme configurations.

1 | plugins: |

Please also use `\\(`

and `\\)`

to wrap your inline expressions and `$$`

or `\\[`

and `\\]`

pair to wrap
block expressions.
For example,

1 | This is an inline expression: \\(ax^2+bx+c=0\\). |

Sometimes your \(\TeX\) syntax will be mistaken as Markdown syntax, which will result in rendering error.
For instance, the following equation will not work since it contains more than one `_`

(underscores),
which are mistaken for the italic text when processed by the Markdown renderer:

1 | $$ |

In this case, you can either escape every character that may cause confusion:

1 | $$ |

or simply wrap the whole equation with an additional pair of HTML tags:

1 | <div> |

## MathJax

**Installation Guide**

You can use MathJax to render \(\TeX\), MathML, or AsciiMath expressions.
To enable MathJax, please set `plugins`

> `mathjax`

to `true`

in your theme configurations.

1 | plugins: |

When using the \(\TeX\) syntax, please use `$`

or `\\(`

and `\\)`

to wrap your inline expressions and
and `$$`

or `\\[`

and `\\]`

pair to wrap block expressions.
You can also use \(\LaTeX\) environments directly.
For example,

1 | This is an inline expression: \\(ax^2+bx+c=0\\). This is another inline expression: $ax^2+bx+c>0$. |

Or you can use MathML syntax. For example,

1 | When |

Similarly, you can also use AsciiMath supported by MathJax.
Expressions should be wrapped in `\``

in this case.

1 | When \`a != 0\`, there are two solutions to \`ax^2 + bx + c = 0\` and they are <p style="text-align:center">\`x = (-b +- sqrt(b^2-4ac))/(2a)\`.</p> |

Sometimes your latex syntax will be mistaken as Markdown syntax, which will result in rendering error. Please refer to the KaTeX section for solutions to this.

**Preview(\(\TeX\) & \(\LaTeX\))**

This is an inline expression: \(ax^2+bx+c=0\). This is another inline expression: $ax^2+bx+c>0$.

This is a block expression: $$\displaystyle \frac{1}{\Bigl(\sqrt{\phi \sqrt{5}}-\phi\Bigr) e^{\frac25 \pi}} = 1+\frac{e^{-2\pi}} {1+\frac{e^{-4\pi}} {1+\frac{e^{-6\pi}} {1+\frac{e^{-8\pi}} {1+\cdots} } } }$$

This is another block expression: \[f(x) = \int_{-\infty}^\infty\hat f(\xi)e^{2 \pi i \xi x}d\xi\]

Or use \(\LaTeX\) environment: \begin{equation} A = \begin{bmatrix} a & b \\ c & c \end{bmatrix} \end{equation}

**Preview(MathML)**

When $a\ne 0$, there are two solutions to $a{x}^{2}+bx+c=0$ and they are $$x=\frac{-b\pm \sqrt{{b}^{2}-4ac}}{2a}\text{.}$$

**Preview(AsciiMath)**

When `a != 0`, there are two solutions to `ax^2 + bx + c = 0` and they are

`x = (-b +- sqrt(b^2-4ac))/(2a)`.

## Cookie Consent

**Installation Guide**

You can show a cookie consent dialog to your visitor by enabling the Cookie Consent plugin. Please refer to Download Cookie Consent and Documentation for the Cookie Consent plugin for details on each configuration setting. You can also disable the cookie consent dialog by commenting out the configurations.

1 | plugins: |

## Outdated Browser

**Installation Guide**

You can use the Outdated Browser plugin to detect outdated browsers used by
your site’s visitors and remind them to upgrade their browsers.
To enable it, please set `plugins`

> `outdated_browser`

to `true`

in your theme configurations.
Click here to see a live preview of this plugin.

1 | plugins: |

## Page Loading Animations

**Installation Guide**

Page Loading Animations are enabled by Icarus by default.
To disable it, please set `plugins`

> `animejs`

to `false`

in your theme configurations.

1 | plugins: |

Also, to disable the page loading progressbar, please set `plugins`

> `progressbar`

to `false`

in
your theme configurations.

1 | plugins: |

Icarus User Guide - Other Plugins

http://blog.zhangruipeng.me/hexo-theme-icarus/Plugins/Other/icarus-user-guide-other-plugins/