48 lines
1021 B
JavaScript
48 lines
1021 B
JavaScript
class BindInOut {
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constructor(bindIn, bindOut) {
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this.in = bindIn;
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this.out = bindOut;
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this.eventWrapper = {};
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this.eventType = /(INPUT|TEXTAREA)/.test(bindIn.tagName) ? 'keyup' : 'change';
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}
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addEvents() {
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this.eventWrapper.updateOut = this.updateOut.bind(this);
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this.in.addEventListener(this.eventType, this.eventWrapper.updateOut);
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return this;
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}
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updateOut() {
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this.out.textContent = this.in.value;
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return this;
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}
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removeEvents() {
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this.in.removeEventListener(this.eventType, this.eventWrapper.updateOut);
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return this;
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}
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static initAll() {
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const ins = document.querySelectorAll('*[data-bind-in]');
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return [].map.call(ins, (anIn) => BindInOut.init(anIn));
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}
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static init(anIn, anOut) {
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const out = anOut || document.querySelector(`*[data-bind-out="${anIn.dataset.bindIn}"]`);
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if (!out) return null;
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const bindInOut = new BindInOut(anIn, out);
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return bindInOut.addEvents().updateOut();
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}
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}
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export default BindInOut;
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