underdom

Underdom is a minimalist helper library to make writing vanilla javascript DOM manipulation just a bit easier with some chaining while still making it completely compatible with the vanilla DOM API.

Why ?

Sprinkle in the convenience of chaining common DOM methods in 855 bytes

Before (one element)

var el = document.createElement('div');
    el.style.display = 'inline-block';
    el.style.padding = '10px';
    el.className = 'blocky';
    el.setAttribute('data-showing', '1');
    el.addEventListener('click', function(e) {
        console.log('clicked', e);
    })
    document.body.appendChild(div);

After

var el = document.createElement('div')
    ._css({display: 'inline-block', padding: '10px'})
    ._attr({class: 'blocky', 'data-showing': '1'})
    ._on('click', function(e) {
        console.log('clicked');
    })
    ._appendTo(document.body);

Before (multiple elements)

var el1 = document.createElement('div');
for (var i=0; i<10; i++) {
    var subel = document.createElement('div');
    subel.style.display = 'inline-block';
    subel.style.padding = '10px';
    subel.style.width = '33%';
    subel.textContent = 'Box ' + (i+1);
    el1.appendChild(subel);
}
[].slice.call(el1.getElementsByTagName('div')).forEach(function(subel){
    subel.style.width = '50%';
})

After (multiple elements)

var el1 = document.createElement('div');
for (var i=0; i<10; i++) {
    // no variable created
    document.createElement('div')
    ._css({display: 'inline-block', padding: '10px', width: '33%'})
    ._text('Box '+(i+1))
    ._appendTo(el1);
}
el1.getElementsByTagName('div')._css({width: '50%'})

Where it shines!

underdom really shines when you are creating a lot of elements and trying to do things with them -- check this out!

document.body._html('')
for(i =0; i< 10; i++){
    document.createElement('div')._css({padding: '4px 10px'})
    ._append(
        document.createElement('label')
        ._append(
            document.createElement('input')._attr({type: 'checkbox'})._css({display: 'inline-block', 'vertical-align':'top'})._on('change', function(e){
                console.log('Option', (i+1), 'changed')
                e.target.parentNode.parentNode._css({'background-color': e.target.checked ? 'red' : 'blue'})
            })
        )
        ._append(
            document.createElement('span')._text('Option '+(i+1))._css({display: 'inline-block', 'vertical-align':'top'})
        )
    )
    ._appendTo(document.body)
}

Methods

Each of these methods returns the DOM node so they can be chained

name	arguments	description	example
css	css	sets the style properties of the node(s) using an object with each style property as the key, similar to jquery but only supports objects	document.querySelectorAll('span')._css({background: 'red', 'font-size': '12px'})
attr	attr	sets the attribute properties of the node(s) using an object with each attribute name as the key, similar to jquery but only supports objects	document.getElementsByTagName('input')._css({checked: true, 'data-color': 'blue'})
text	text	sets the .textContent of the node(s)	document.getElementsByClassName('items')._text('Hello')
html	html	sets the .innerHTML of the node(s)	document.querySelectorAll('div[data-color="blue"]')._html('<span>hi</span>')
appendTo	target	appends the element to the target DOM node(s)	document.createElement('div')._html('<span>hi</span>')._appendTo(document.body)
append	child	appends child to the node(s)	document.body._append(document.createElement('div')._text('hello'))
on	ev, fn	does document.addEventLisenter(ev, fn) to the node(s)	document.getElementsByTagName('input')._on('change', function(e){ console.log('checked', e.target.checked); })

How to use this?

Option 1. paste the minified code into your project

Node.prototype.appendTo=function(t){return t.appendChild(this),this},Node.prototype.append=function(t){return this.appendChild(t),this},Node.prototype.text=function(t){return this.textContent=t||"",this},Node.prototype.html=function(t){return this.innerHTML=t||"",this},Node.prototype.css=function(t){for(var o in t)this.style.setProperty(o,t[o]);return this},Node.prototype.attr=function(t){for(var o in t)t[o]||0===t[o]?"boolean"==typeof t[o]?this[o]=t[o]:this.setAttribute(o,t[o]):this.removeAttribute(o);return this},Node.prototype.on=function(t,o){return this.addEventListener(t,o),this},NodeList.prototype.__proto__=Array.prototype;var methods=["css","attr","appendTo","append","text","html"];methods.forEach(function(t){NodeList.prototype[t]=HTMLCollection.prototype[t]=function(o,e){for(var r=this.length-1;r>=0;r--)this[r][t](o,e);return this}});

Option 2. RawGit

<script src="https://cdn.rawgit.com/pleaseshutup/underdom/master/dist/underdom.min.js"></script>

Option 3: ???

I don't ever use front-end bundlers so I need to be educated

License

MIT