Question

我有这个名为ngx-loading的npm包。我必须设置this.loading = true和this.loading = false以使其显示而不显示。当我在javascript中使用警报时出现问题。警报显示“确定”和“取消”。当我点击“确定”时加载器消失，而如果我点击“取消”和“x”它仍然出现？当我点击取消或x按钮时，如何让装载机消失？这是我在下面所做的。

TS

onUpdate(form: NgForm) {
  this.loading = true;

  name =  form.value.name,

  if (confirm('Are you sure you want to update?')) {
    this.subscription = this.prodService.update(name)
    .subscribe(
      data => {
       this.loading = false;
       console.log(data); 
     },
     error => {
       this.loading = false;
       console.log(error);
     });
  }
}

Answer 1

尝试以下方法：

onUpdate(form: NgForm) {
  this.loading = true;

  name =  form.value.name,
var _confirm = confirm('Are you sure you want to update?');
  if (_confirm ) {
    this.subscription = this.prodService.update(name)
    .subscribe(
      data => {
       this.loading = false;
       console.log(data); 
     },
     error => {
       this.loading = false;
       console.log(error);
     });
  }
else {
 this.loading = false;
}
}

Answer 2

只需在用户点击取消时添加其他条件。

onUpdate(form: NgForm) {
  this.loading = true;

  name =  form.value.name,

  if (confirm('Are you sure you want to update?')) {
    this.subscription = this.prodService.update(name)
    .subscribe(
      data => {
       this.loading = false;
       console.log(data); 
     },
     error => {
       this.loading = false;
       console.log(error);
     });
  } else {
    this.loading = false;
  }
}

在Angular 4中单击取消时删除Loader

2 个答案: