1.) react 中
<input className="inp3" placeholder="密碼" type="password"?onChange={this.changepassword.bind(this)}?onFocus={this.FocusFN.bind(this)}?value={this.state.paswword}/>
FocusFN(){
setTimeout(()=>{
let pannel = document.querySelector('.inp3');
pannel.scrollIntoView(true);
},200)
}
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