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React イベント

Posted at

イベントハンドラーがない場合

<button onClick={()=>{alert('hogehoe'}}

イベントハンドラーがある場合


state={
 name:'tetete'
}


switchNameHandler={()=>{
  this.setState={name:hogogogo}

}}


<button onClick={this.switchNameHandler}

イベントハンドラーに引数を渡す場合

state={
 name:'tetete'
}


switchNameHandler={(info)=>{
  this.setState={name:info}

}}


<button onClick={()=>{this.switchNameHandler("aaaa")}}
                    
                    or

<button onClick={this.switchNameHandler.bind(this,"hhhh")}

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