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9. Reagent

Published 27 June 16

One of the more popular wrapper libraries for using React with ClojureScript is Reagent. We’ll build a kanban style board to demonstrate the main features.

Show notes

We already learned the basics of React in Episode 6. If you’re new to React I would suggest you check that out. In this episode we’ll work with a ClojureScript wrapper library called Reagent to build a kanban-style board with cards and columns.

Start with a new Chestnut app, this time with the --reagent option. Chestnut combines a minimal setup with all tooling and setup to work comfortably.

lein new chestnut kanban -- --reagent

Now start Figwheel, either from a terminal with lein figwheel, or if you’re using an nREPL based system like CIDER you can call Chestnut’s (run) from your REPL.

lein figwheel
M-x cider-jack-in
user> (run)

browse source code




.card {
    background-color:  #fafafa;
    border-radius: 0.2em;
    padding: 0.5em;
    margin: 0.5em;

.card.editing {
    padding: 0;

.card.editing input {
    width: 100%;
    box-sizing: border-box;
    font-size: 1em;

.column, .new-column {
    width: 200px;
    float: left;
    padding: 0.1em 0.5em;
    border-radius: 0.2em;
    background-color:  #cccccc;
    margin: 0.5em;

.new-card, .new-column {
    padding: 0.5em;
    background-color:  #aaaaaa;
    border: 1px solid #cccccc;
    border-radius: 0.2em;
    margin: 0.5em;