<div style="color: #abb2bf; background-color: #282c34; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;">(&lt;<span style="color: #e5c07b;">HTMLInputElement</span>&gt;<span style="color: #e06c75; font-style: italic;">$event</span>.<span style="color: #e06c75;">target</span>).<span style="color: #e06c75;">checked</span></div>
<div style="color: #abb2bf; background-color: #282c34; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;">&nbsp;</div>
<div style="color: #abb2bf; background-color: #282c34; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;"><span style="color: #e06c75;">이렇게 쓰면 됩니다.</span></div>

Inflearn コミュニティ Q&A

target null 에러뜨시는 분들