解决方案:
html:
<input type="number" @blur="Input()" placeholder="请输入数字" />
JS:
Input(){
setTimeout(function() {
var scrollHeight = document.documentElement.scrollTop || document.body.scrollTop || 0;
window.scrollTo(0, Math.max(scrollHeight - 1, 0));//页面回滚动到页面顶部
}, 100);
}