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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | 1x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 1x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 7x 1x 14x 7x 16x 16x 16x | window.customElements.define('h-characters-remaining', class extends HTMLElement {
constructor() {
super()
this.updateCharBind = this.updateChar.bind(this)
}
generateTemplate() {
const wrapperDiv = document.createElement('div')
const el = this.firstElementChild
this.insertAdjacentElement('afterbegin', wrapperDiv)
wrapperDiv.appendChild(el)
wrapperDiv.insertAdjacentHTML('beforeend', '<span></span>')
}
insertStyle() {
const style = `
<style type="text/css" id="characters-remaining">
characters-remaining div {
border: 1px solid var(--field-border);
border-radius: 2px;
display: flex;
justify-content: space-between;
}
characters-remaining span {
align-self: center;
color: #232323;
font-size: 0.65rem;
font-weight: 200;
padding-right: 0.5rem;
white-space: nowrap;
}
characters-remaining textarea + span {
align-self: flex-end;
padding-bottom: 0.8rem;
}
characters-remaining input,
characters-remaining textarea {
border: 0;
font-size: 0.9rem;
outline: 0;
padding: 0.8rem;
width: 100%;
}
characters-remaining textarea {
height: 6.8rem;
resize: none;
}
</style>`
const elem = document.head || this.parentElement || this
if (!elem.querySelector('#characters-remaining')) {
elem.insertAdjacentHTML('afterbegin', style)
}
}
connectedCallback() {
this.insertStyle()
this.generateTemplate()
this.$userInput = this.querySelector('textarea') || this.querySelector('input')
this.$span = this.querySelector('span')
this.dataset.caption = this.getAttribute('data-caption')
Eif (this.$userInput && this.$userInput.maxLength > 0) {
this.dataset.caption = this.dataset.caption || 'chars max'
this.updateChar()
this.$userInput.addEventListener('input', this.updateCharBind)
}
}
disconnectedCallback() {
Eif (this.$userInput) {
this.$userInput.removeEventListener('input', this.updateCharBind)
}
}
static get observedAttributes() {
return ['data-caption']
}
attributeChangedCallback(attr, oldValue, newValue) {
if (oldValue !== newValue) {
this.updateChar()
}
}
updateChar() {
Eif(this.$userInput) {
const maxLen = this.$userInput.maxLength
this.$span.textContent = `${maxLen - this.$userInput.value.length} ${this.dataset.caption}`
}
}
})
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