html：
<input type="text" style="flex-grow:1; margin-left:5px;" (keydown)="event):''"
(focus)="myfocus()" (blur)="myblur()" [disabled]="!inputRadio.checked">
ts代码：
myfocus() {
console.log('mymyfocus()+++');
}
myblur() {
console.log('myblur()----');
}
enter(event: KeyboardEvent) {
console.log(event);
event.target'blur';
}
