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32 lines
584 B
JavaScript
32 lines
584 B
JavaScript
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const UPDATE_INTERVAL_MS = 100;
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/**
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* A hook used to display a timer counting from the moment
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* of mounting.
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*/
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const Timer = {
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mounted() {
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this.state = {
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start: Date.now(),
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interval: null,
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};
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this.state.interval = setInterval(() => {
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this.__tick();
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}, UPDATE_INTERVAL_MS);
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},
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destroyed() {
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clearInterval(this.state.interval);
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},
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__tick() {
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const elapsedMs = Date.now() - this.state.start;
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const elapsedSeconds = elapsedMs / 1_000;
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this.el.innerHTML = `${elapsedSeconds.toFixed(1)}s`;
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},
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};
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export default Timer;
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