JSFiddle - React, Tailwind, and code Playground

by konijn_gmail_com

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/themes/redmond/jquery-ui.min.css">
<script src="https://jquery-elastic.googlecode.com/svn-history/r37/trunk/jquery.elastic.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.0/jquery-ui.min.js"></script>
<h4>Tasks</h4><button id="undo">Undo</button><button id="redo">Redo</button>
<p id="info"></p>
<div id="todo_list_container">
    <ul id="todo_items">
    </ul>
    <span id="add_todo">
        <button id="add" disabled>Add</button>
        <textarea id="new_todo_item" placeholder="Create new task"></textarea>
        <input type="checkbox" id="star" /><label>Star</label>
    </span>
</div>

CSS

html{
    font-family: "Arial";
}

h4{
    display: inline-block;
}

.item_content{
    display: inline;
}

#undo, #redo{
    text-align: right;
    display: inline-block;
}

#todo_list_container{
    /*border: 1px solid black;*/
    min-width: 400px;
}

#todo_items{
    /*border: 1px solid red;
    display: inline-block;*/
}

ul
{
    list-style-type: none;
}

label{
    float: right;
}

.star{
    float: right;
}

#add, #star, label{
    vertical-align: top;
}

textarea{
    width: 75%;
    resize: none;
    
    border: none;
    overflow: auto;
    outline: none;
    
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
}

JavaScript

$(function(){
    
    // check if browser supports localStorage, if not, notify and exit
    checkLocalStorageBrowserSupport();
    
    //check localStorage for existing data
    checkLocalStorageExistingData();
    
    tweakMinorUIStuff();
    
    // todo_item class
    var todo_item = {
        content: "",        // default content
        starred: false,      // default star value
        addItem: function(){
            // collect new item data
            todo_item.content = $("#new_todo_item").val();
            todo_item.starred = $("#star").prop('checked');
            addItem(todo_item);
        },
        toggleStar: function(){
            // update localStorage
            // update UI
            alert("working!");
        },
        editItem: function(){
            // toggle textarea
            // update localStorage
            // update UI
        }
    }
    
    $("#add").click(function(){ todo_item.addItem(); });
    $(".star").click(function(){ todo_item.toggleStar(); });
    
    
    
})

function checkLocalStorageBrowserSupport(){
    if(!window.localStorage) {
        // notify user
        $("#info").text("Your browser does not support the HTML5 feature 'localStorage'. Please use an updated browser for this application to work.");
        // stop
        return false;
    } else
        return true;
}

function checkLocalStorageExistingData(){
    if(localStorage.getItem('todo_items')){
        var todo_items_json = localStorage.getItem('todo_items');
        
        var todo_items = todo_items_json ? JSON.parse(todo_items_json) : [];
        
        todo_items.forEach(function(item){
            var item_content = item[0];
            var star_check = item[1];
            
            var checked = "";
            if(star_check) checked = "checked";
            
            $("ul").append("<li><button class='done'>Done</button>"+
                           "<p class='item_content'>"+item_content+"</p>"+
                         ...