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.select { | ||
position: relative; | ||
width: 100%; | ||
z-index: 1000; | ||
} | ||
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.select__trigger { | ||
display: flex; | ||
background-color: #fff; | ||
border: 1px solid #ccc; | ||
border-radius: 0.3125rem; | ||
cursor: pointer; | ||
align-items: center; | ||
width: 100%; | ||
font-size: 1rem; | ||
padding: 0.375rem 0.75rem; | ||
line-height: 1.4; | ||
user-select: none; | ||
font-size: 1rem; | ||
justify-content: space-between; | ||
font-style: italic; | ||
} | ||
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.select__trigger::after { | ||
content: ''; | ||
width: 0.75rem; | ||
height: 0.75rem; | ||
background-size: cover; | ||
background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" height="100" width="100"%3E%3Cpath d="M97.625 25.3l-4.813-4.89c-1.668-1.606-3.616-2.41-5.84-2.41-2.27 0-4.194.804-5.777 2.41L50 52.087 18.806 20.412C17.223 18.805 15.298 18 13.03 18c-2.225 0-4.172.804-5.84 2.41l-4.75 4.89C.813 26.95 0 28.927 0 31.23c0 2.346.814 4.301 2.439 5.865l41.784 42.428C45.764 81.174 47.689 82 50 82c2.268 0 4.215-.826 5.84-2.476l41.784-42.428c1.584-1.608 2.376-3.563 2.376-5.865 0-2.26-.792-4.236-2.375-5.932z"/%3E%3C/svg%3E'); | ||
} | ||
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.select__trigger:focus { | ||
outline: none; | ||
} | ||
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.select_show .select__trigger::after { | ||
transform: rotate(180deg); | ||
} | ||
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.select__dropdown { | ||
display: none; | ||
position: absolute; | ||
top: 2.5rem; | ||
left: 0; | ||
right: 0; | ||
border: 1px solid #ccc; | ||
max-height: 10rem; | ||
overflow-y: auto; | ||
border-radius: 0.3125rem; | ||
} | ||
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.select_show .select__dropdown { | ||
display: block; | ||
} | ||
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.select_show .select__backdrop { | ||
display: block; | ||
} | ||
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.select__items { | ||
margin: 0; | ||
padding: 0; | ||
list-style: none; | ||
} | ||
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.select__item { | ||
padding: 0.375rem 0.75rem; | ||
} | ||
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.select__item_selected { | ||
background-color: #e1f5fe; | ||
display: flex; | ||
align-items: center; | ||
justify-content: space-between; | ||
} | ||
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.select__item_selected::after { | ||
content: ''; | ||
width: 0.75rem; | ||
height: 0.75rem; | ||
color: #0277bd; | ||
background-size: cover; | ||
background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" height="100" width="100" class="svg-inline--fa fa-check fa-w-16" data-icon="check" data-prefix="fas" aria-hidden="true"%3E%3Cpath d="M33.964 85.547l-32.5-32.251a4.935 4.935 0 010-7.017l7.071-7.017a5.027 5.027 0 017.071 0L37.5 60.987l46.894-46.534a5.028 5.028 0 017.07 0l7.072 7.017a4.935 4.935 0 010 7.017l-57.5 57.06a5.027 5.027 0 01-7.072 0z" fill="%230277bd"/%3E%3C/svg%3E'); | ||
} | ||
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.select__item:hover { | ||
background-color: #f5f5f5; | ||
cursor: pointer; | ||
transition: 0.2s background-color ease-in-out; | ||
} | ||
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.select__backdrop { | ||
position: fixed; | ||
z-index: -1; | ||
left: 0; | ||
right: 0; | ||
top: 0; | ||
bottom: 0; | ||
display: none; | ||
background-color: transparent; | ||
} |
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(function () { | ||
if (typeof window.CustomEvent === 'function') return false; | ||
function CustomEvent(event, params) { | ||
params = params || { bubbles: false, cancelable: false, detail: null }; | ||
var evt = document.createEvent('CustomEvent'); | ||
evt.initCustomEvent( | ||
event, | ||
params.bubbles, | ||
params.cancelable, | ||
params.detail | ||
); | ||
return evt; | ||
} | ||
window.CustomEvent = CustomEvent; | ||
})(); | ||
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const templateSelect = (data = [], defaultText = 'Выберите из списка') => { | ||
let items = []; | ||
data.forEach((item) => { | ||
let classItemSelected = ''; | ||
if (item === defaultText) { | ||
classItemSelected = ' select__item_selected'; | ||
} | ||
items.push( | ||
`<li class="select__item${classItemSelected}" data-select="item">${item}</li>` | ||
); | ||
}); | ||
return ` | ||
<div class="select__backdrop" data-select="backdrop"></div> | ||
<button type="button" class="select__trigger" data-select="trigger"> | ||
${defaultText} | ||
</button> | ||
<div class="select__dropdown"> | ||
<ul class="select__items"> | ||
${items.join('')} | ||
</ul> | ||
</div>`; | ||
}; | ||
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class CustomSelect { | ||
constructor(selector, config) { | ||
this._$main = document.querySelector(selector); | ||
this._config = config; | ||
if (this._config.data) { | ||
this._render(); | ||
} | ||
this._$trigger = this._$main.querySelector('[data-select="trigger"]'); | ||
this._addEventListener(); | ||
} | ||
_isShow() { | ||
return this._$main.classList.contains('select_show'); | ||
} | ||
_changeItem(item) { | ||
if (!item.classList.contains('select__item_selected')) { | ||
const itemSelected = this._$main.querySelector('.select__item_selected'); | ||
if (itemSelected) { | ||
itemSelected.classList.remove('select__item_selected'); | ||
} | ||
item.classList.add('select__item_selected'); | ||
this._$trigger.textContent = item.textContent; | ||
this._$main.dispatchEvent(this._changeValue); | ||
this._config.onSelected ? this._config.onSelected(item) : null; | ||
} | ||
} | ||
_eventHandler(e) { | ||
const target = e.target; | ||
const type = target.dataset.select; | ||
if (type === 'trigger') { | ||
this.toggle(); | ||
} else if (type === 'item') { | ||
this._changeItem(target); | ||
this.hide(); | ||
} else if (type === 'backdrop') { | ||
// закрываем селект, если кликнули вне его | ||
this.hide(); | ||
} | ||
} | ||
_addEventListener() { | ||
// привяжем функцию _eventHandler к контексту this | ||
this._eventHandler = this._eventHandler.bind(this); | ||
// добавим слушатель | ||
this._$main.addEventListener('click', this._eventHandler); | ||
this._changeValue = new CustomEvent('select.change'); | ||
} | ||
_render() { | ||
// добавляем класс select, если его нет у базового элемента | ||
if (!this._$main.classList.contains('select')) { | ||
this._$main.classList.add('select'); | ||
} | ||
this._$main.innerHTML = templateSelect( | ||
this._config['data'], | ||
this._config['defaultValue'] | ||
); | ||
} | ||
show() { | ||
this._$main.classList.add('select_show'); | ||
} | ||
hide() { | ||
this._$main.classList.remove('select_show'); | ||
} | ||
toggle() { | ||
this._isShow() ? this.hide() : this.show(); | ||
} | ||
// удаляем слушатели и данный селект из DOM | ||
destroy() { | ||
this._$main.removeEventListener('click', this._eventHandler); | ||
this._$main.innerHTML = ''; | ||
} | ||
selectedItem(value) { | ||
if (typeof value === 'object') { | ||
if (value['value']) { | ||
this._$main | ||
.querySelectorAll('[data-select="item"]') | ||
.forEach(($item) => { | ||
if ($item.textContent.trim() === value['value'].toString()) { | ||
this._changeItem($item); | ||
return; | ||
} | ||
}); | ||
} else if (value['index'] >= 0) { | ||
const $item = this._$main.querySelectorAll('[data-select="item"]')[ | ||
value['index'] | ||
]; | ||
this._changeItem($item); | ||
} | ||
return this.selectedItem(); | ||
} | ||
let indexSelected = -1; | ||
let valueSelected = ''; | ||
this._$main | ||
.querySelectorAll('[data-select="item"]') | ||
.forEach(($element, index) => { | ||
if ($element.classList.contains('select__item_selected')) { | ||
indexSelected = index; | ||
valueSelected = $element.textContent; | ||
} | ||
}); | ||
return { index: indexSelected, value: valueSelected }; | ||
} | ||
} |
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<!doctype html> | ||
<html lang="ru"> | ||
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<head> | ||
<meta charset="UTF-8"> | ||
<meta name="viewport" content="width=device-width, initial-scale=1.0"> | ||
<title>Custom select</title> | ||
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet"> | ||
<!-- Подключаем CSS файл CustomSelect --> | ||
<link rel="stylesheet" href="custom_select.css"> | ||
<!-- Стили для страницы --> | ||
<style> | ||
body { | ||
font-family: 'Roboto', sans-serif; | ||
} | ||
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.container { | ||
max-width: 250px; | ||
margin-left: auto; | ||
margin-right: auto; | ||
} | ||
</style> | ||
</head> | ||
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<body> | ||
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<div class="container"> | ||
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<div class="select"> | ||
<div class="select__backdrop" data-select="backdrop"></div> | ||
<button type="button" class="select__trigger" data-select="trigger"> | ||
Выберите из списка | ||
</button> | ||
<div class="select__dropdown"> | ||
<ul class="select__items"> | ||
<li class="select__item" data-select="item">1</li> | ||
<li class="select__item select__item_selected" data-select="item">2</li> | ||
<li class="select__item" data-select="item">3</li> | ||
<li class="select__item" data-select="item">4</li> | ||
<li class="select__item" data-select="item">5</li> | ||
<li class="select__item" data-select="item">6</li> | ||
<li class="select__item" data-select="item">7</li> | ||
<li class="select__item" data-select="item">8</li> | ||
<li class="select__item" data-select="item">9</li> | ||
</ul> | ||
</div> | ||
</div> | ||
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</div> | ||
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<!-- Подключаем js-файл CustomSelect --> | ||
<script src="custom_select.js"></script> | ||
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<!-- JS код в котором инициализируем экземпляр CustomSelect для .select --> | ||
<script> | ||
const select1 = new CustomSelect('.select', { | ||
defaultValue: 'Ford', | ||
data: ['Volkswagen', 'Ford', 'Toyota', 'Nissan'], | ||
onSelected(item) { | ||
console.log(`Выбранное значение: ${item.textContent}`); | ||
}, | ||
}); | ||
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document.querySelector('.select').addEventListener('select.change', (e) => { | ||
console.log( | ||
`Выбранное значение: ${ | ||
e.target.querySelector('.select__item_selected').textContent | ||
}` | ||
); | ||
}); | ||
</script> | ||
</body> | ||
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</html> |