Angular 11.x AbstractControl valueChanges rxjs 如何只取最后一个值的请求

Z时代
2024-01-10
分类：技术分享

现在的代码为:
`

return new Promise((resolve) => {
if (!control.value) {
control.setErrors({namesUnion: true });
return resolve({namesUnion: true });
} else {
control.valueChanges.pipe(throttleTime(1000),first()).pipe(mergeMap((value) => this.getResult(value))).subscribe(
data => {
console.log('[NamesUnionValidator-Directive]result value: '+data);
control.setErrors(null);
return resolve(null);
},
error => {
let er:HttpErrorResponse = error as HttpErrorResponse;
console.log('[NamesUnionValidator-Directive]error status: '+er.status);
control.setErrors({namesUnion: true });
return resolve({namesUnion: true });
}
);
}});