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Event.currentTarget and Event.target - My Frontend Note
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<h1>Event.currentTarget and Event.target</h1>
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<span class="date">2017/4/26</span>
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<pre><code class="language-javascript">_handleBtnClicked(event) {
event.preventDefault()
console.log('currentTarget', event.currentTarget)
console.log('target', event.target)
const progressType = `type${event.currentTarget.dataset.typeid}`
this.props.switchDisplayed(progressType)
}
<Button
key={value.ID}
name={value.ID}
data-typeid={value.ID}
checked={value.displayed}
onClick={this._handleBtnClicked}
>
{value.title}
<div>{ICONS[`type${value.ID}`]}</div>
</Button>
</code></pre>
<p>svg 底下超多層<br/>
用event.target是抓到實際click到的DOM<br/>
用event.currentTarget是抓到設監聽器的DOM</p>
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