15 lines
386 B
JavaScript
15 lines
386 B
JavaScript
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export default class extends HTMLElement {
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connectedCallback () {
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const input = this.querySelector('input')
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const invalidMessage = this.dataset.invalidMessage || ''
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input.addEventListener('invalid', () => {
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input.setCustomValidity(input.value ? invalidMessage : '')
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})
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input.addEventListener('input', () => {
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input.setCustomValidity('')
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})
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}
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}
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