<label id="img_category_label"class="field"for="img_category"data-value="">
<span>Category</span>
<div id="img_category"class="psuedo_select"name="img_category">
<span class="selected"></span>
<ul id="img_category_options"class="options">
<li class="option"data-value="opt_1">Option 1</li>
<li class="option"data-value="opt_2">Option 2</li>
</ul>
</div>
</label>
<a id="gitHubButton" href="https://github.com/sammurphey/materialDesignElements" target="_blank">Fork on GitHub</a>html,
body{
align-items: center;
background:#E8E8E8;
box-sizing:border-box;
color: #666;
cursor: default;
display: flex;
font-family: sans-serif;
height:100%;
justify-content: center;
margin:0;
width:100%;
tap-highlight-color: transparent;
touch-callout: none;
user-select: none;
user-select: none;
user-select: none;
user-select: none;
}
*{
box-sizing:inherit;
cursor: inherit;
transition-duration:.2s;
transition-property:none;
transition-timing-function:cubic-bezier(.42,0,.58,1)
}
label.field {
border-radius: 2px;
color: #666;
display: block;
margin: 16px;
max-width: 300px;
padding: 8px;
opacity: 0;
position: relative;
transition-property: opacity;
z-index: 1;
span {
color: inherit;
display: block;
font-size: 16px;
height: 20px;
line-height: 20px;
left: 9px;
pointer-events: none;
position: absolute;
top: 32px;
transform: scale(1) translateY(0);
transition-property: color, font-size, top;
z-index: 1;
&.required {
&::after {
color: inherit;
content: "*";
display: block;
height: 20px;
left: -20px;
line-height: 20px;
position: absolute;
text-align: center;
top: 0;
width: 20px;
}
}
.error & {
color: #F02318
}
}
.psuedo_select {
background: rgba(255,255,255,0);
position: relative;
border-color: #666;
border-style: solid;
border-width: 0 0 2px 0;
color: #666;
cursor: pointer;
font-size: 20px;
height: 24px;
line-height: 24px;
margin: 24px 32px 0 0;
min-width: 250px;
padding-top: 24px;
outline: 0;
z-index: 1;
&::after {
background: url("data:image/svg+xml;utf8,<svg fill='#666' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'> <path d='M7.41 7.84L12 12.42l4.59-4.58L18 9.25l-6 6-6-6z'/> <path d='M0-.75h24v24H0z' fill='none'/> </svg>"), no-repeat;
content: "";
height: 24px;
width: 24px;
position: absolute;
top: 0;
right: 0;
transition-property: background;
}
.selected {
height: 24px;
left: 1px;
line-height: 24px;
opacity: 0;
position: absolute;
top: 0;
transform: translateY(24px);
transition-property: opacity, transform;
will-change: transform;
}
ul {
background: #fff;
box-shadow: 0 1px 4px 0 rgba(0,0,0,0.14);
display: block;
height: 0;
list-style: none;
margin-top: 2px;
opacity: 0;
overflow: hidden;
padding: 0 1px;
pointer-events: none;
transition-property: height, opacity;
width: 100%;
z-index: 2;
li {
height: 32px;
padding: 8px 4px;
}
}
}
.deselect {
height: 100vh;
left: 0;
position: fixed;
top: 0;
width: 100vw;
z-index: -1;
}
&.focused {
color: #007BED;
.psuedo_select {
border-color: #007BED;
&::after {
background: url("data:image/svg+xml;utf8,<svg fill='#007BED' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'> <path d='M7.41 7.84L12 12.42l4.59-4.58L18 9.25l-6 6-6-6z'/> <path d='M0-.75h24v24H0z' fill='none'/> </svg>"), no-repeat;
}
ul {
opacity: 1;
pointer-events: all;
}
}
}
}
#gitHubButton {
background: rgba(0,0,0,0.25);
bottom: 10px;
color: #FFF;
font-size: 12px;
padding: 5px;
position: fixed;
text-decoration: none;
right: 10px;
} ////////////////////////////////////
// prerequisite utility functions //
// the real stuff starts below //
////////////////////////////////////
var util = {
f: {
addStyle: function (elem, prop, val, vendors) {
var i, ii, property, value
if (!util.f.isElem(elem)) {
elem = document.getElementById(elem)
}
if (!util.f.isArray(prop)) {
prop = [prop]
val = [val]
}
for (i = 0; i < prop.length; i += 1) {
var thisProp = String(prop[i]),
thisVal = String(val[i])
if (typeof vendors !== "undefined") {
if (!util.f.isArray(vendors)) {
vendors.toLowerCase() == "all" ? vendors = ["webkit", "moz", "ms", "o"] : vendors = [vendors]
}
for (ii = 0; ii < vendors.length; ii += 1) {
elem.style[vendors[i] + thisProp] = thisVal
}
}
thisProp = thisProp.charAt(0).toLowerCase() + thisProp.slice(1)
elem.style[thisProp] = thisVal
}
},
cssLoaded: function (event) {
var child = util.f.getTrg(event)
child.setAttribute("media", "all")
},
events: {
cancel: function (event) {
util.f.events.prevent(event)
util.f.events.stop(event)
},
prevent: function (event) {
event = event || window.event
event.preventDefault()
},
stop: function (event) {
event = event || window.event
event.stopPropagation()
}
},
getSize: function (elem, prop) {
return parseInt(elem.getBoundingClientRect()[prop], 10)
},
getTrg: function (event) {
event = event || window.event
if (event.srcElement) {
return event.srcElement
} else {
return event.target
}
},
isElem: function (elem) {
return (util.f.isNode(elem) && elem.nodeType == 1)
},
isArray: function(v) {
return (v.constructor === Array)
},
isNode: function(elem) {
return (typeof Node === "object" ? elem instanceof Node : elem && typeof elem === "object" && typeof elem.nodeType === "number" && typeof elem.nodeName==="string" && elem.nodeType !== 3)
},
isObj: function (v) {
return (typeof v == "object")
},
replaceAt: function(str, index, char) {
return str.substr(0, index) + char + str.substr(index + char.length);
}
}
},
//////////////////////////////////////
// ok that's all the utilities //
// onto the select box / form stuff //
//////////////////////////////////////
form = {
f: {
init: {
register: function () {
console.clear()// just cuz codepen
var child, children = document.getElementsByClassName("field"), i
for (i = 0; i < children.length; i += 1) {
child = children[i]
util.f.addStyle(child, "Opacity", 1)
}
children = document.getElementsByClassName("psuedo_select")
for (i = 0; i < children.length; i += 1) {
child = children[i]
child.addEventListener("click", form.f.select.toggle)
}
},
unregister: function () {
//just here as a formallity
//call this to stop all ongoing timeouts are ready the page for some sort of json re-route
}
},
select: {
blur: function (field) {
field.classList.remove("focused")
var child, children = field.childNodes, i, ii, nested_child, nested_children
for (i = 0; i < children.length; i += 1) {
child = children[i]
if (util.f.isElem(child)) {
if (child.classList.contains("deselect")) {
child.parentNode.removeChild(child)
} else if (child.tagName == "SPAN") {
if (!field.dataset.value) {
util.f.addStyle(child, ["FontSize", "Top"], ["16px", "32px"])
}
} else if (child.classList.contains("psuedo_select")) {
nested_children = child.childNodes
for (ii = 0; ii < nested_children.length; ii += 1) {
nested_child = nested_children[ii]
if (util.f.isElem(nested_child)) {
if (nested_child.tagName == "SPAN") {
if (!field.dataset.value) {
util.f.addStyle(nested_child, ["Opacity", "Transform"], [0, "translateY(24px)"])
}
} else if (nested_child.tagName == "UL") {
util.f.addStyle(nested_child, ["Height", "Opacity"], [0, 0])
}
}
}
}
}
}
},
focus: function (field) {
field.classList.add("focused")
var bool = false, child, children = field.childNodes, i, ii, iii, nested_child, nested_children, nested_nested_child, nested_nested_children, size = 0
for (i = 0; i < children.length; i += 1) {
child = children[i]
util.f.isElem(child) && child.classList.contains("deselect") ? bool = true : null
}
if (!bool) {
child = document.createElement("div")
child.className = "deselect"
child.addEventListener("click", form.f.select.toggle)
field.insertBefore(child, children[0])
}
for (i = 0; i < children.length; i += 1) {
child = children[i]
if (util.f.isElem(child) && child.classList.contains("psuedo_select")) {
nested_children = child.childNodes
for (ii = 0; ii < nested_children.length; ii += 1) {
nested_child = nested_children[ii]
if (util.f.isElem(nested_child) && nested_child.tagName == "UL") {
size = 0
nested_nested_children = nested_child.childNodes
for (iii = 0; iii < nested_nested_children.length; iii += 1) {
nested_nested_child = nested_nested_children[iii]
if (util.f.isElem(nested_nested_child) && nested_nested_child.tagName == "LI") {
size += util.f.getSize(nested_nested_child, "height")
console.log("size: " + size)
}
}
util.f.addStyle(nested_child, ["Height", "Opacity"], [size + "px", 1])
}
}
}
}
},
selection: function (child, parent) {
var children = parent.childNodes, i, ii, nested_child, nested_children, time = 0, value
if (util.f.isElem(child) && util.f.isElem(parent)) {
parent.dataset.value = child.dataset.value
value = child.innerHTML
}
for (i = 0; i < children.length; i += 1) {
child = children[i]
if (util.f.isElem(child)) {
if (child.classList.contains("psuedo_select")) {
nested_children = child.childNodes
for (ii = 0; ii < nested_children.length; ii += 1) {
nested_child = nested_children[ii]
if (util.f.isElem(nested_child) && nested_child.classList.contains("selected")) {
if (nested_child.innerHTML) {
time = 1E2
util.f.addStyle(nested_child, ["Opacity", "Transform"], [0, "translateY(24px)"], "all")
}
setTimeout(function (c, v) {
c.innerHTML = v
util.f.addStyle(c, ["Opacity", "Transform", "TransitionDuration"], [1, "translateY(0px)", ".1s"], "all")
}, time, nested_child, value)
}
}
} else if (child.tagName == "SPAN") {
util.f.addStyle(child, ["FontSize", "Top"], ["12px", "8px"])
}
}
}
},
toggle: function (event) {
util.f.events.stop(event)
var child = util.f.getTrg(event), children, i, parent
switch (true) {
case (child.classList.contains("psuedo_select")):
case (child.classList.contains("deselect")):
parent = child.parentNode
break
case (child.classList.contains("options")):
parent = child.parentNode.parentNode
break
case (child.classList.contains("option")):
parent = child.parentNode.parentNode.parentNode
form.f.select.selection(child, parent)
break
}
parent.classList.contains("focused") ? form.f.select.blur(parent) : form.f.select.focus(parent)
}
}
}}
window.onload = form.f.init.register
External CSS
This Pen doesn't use any external CSS resources.
External JavaScript
This Pen doesn't use any external JavaScript resources.