在我的应用程序中，我使用下面的代码通过jQuery显示Bootstrap模态。

 $('#myModall').modal({
                        backdrop: 'static',
                        keyboard: true, 
                        show: true
                }); 

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" data-keyboard="false" data-backdrop="static">

试试这个，在我的应用程序开发…我还遇到了一个麻烦，模型属性的默认值=> data-keyboard="true"， => data- background ="非静态"

希望这对你有所帮助!

TLDR

背景:‘静态’

https://getbootstrap.com/docs/3.3/javascript/#modals-options

为背景指定静态，它不会在单击时关闭模式。

如果你正在使用@ng-bootstrap，请使用以下命令:

组件

import { Component, OnInit } from '@angular/core';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.scss'],
})
export class ExampleComponent implements OnInit {

  constructor(
    private ngbModal: NgbModal
  ) {}

  ngOnInit(): void {
  }

  openModal(exampleModal: any, $event: any) {
    this.ngbModal.open(exampleModal, {
      size: 'lg', // set modal size
      backdrop: 'static', // disable modal from closing on click outside
      keyboard: false, // disable modal closing by keyboard esc
    });
  }
}

模板

<div (click)="openModal(exampleModal, $event)"> </div>
    <ng-template #exampleModal let-modal>
        <div class="modal-header">
            <h5 class="modal-title">Test modal</h5>
        </div>
        <div class="modal-body p-3">
            <form action="">
                <div class="form-row">
                    <div class="form-group col-md-6">
                        <label for="">Test field 1</label>
                        <input type="text" class="form-control">
                    </div>
                    <div class="form-group col-md-6">
                        <label for="">Test field 2</label>
                        <input type="text" class="form-control">
                    </div>

                    <div class="text-right pt-4">
                        <button type="button" class="btn btn-light" (click)="modal.dismiss('Close')">Close</button>
                        <button class="btn btn-primary ml-1">Save</button>
                    </div>
            </form>
        </div>
    </ng-template>

这段代码在angular 9上测试，使用:

“@ng-bootstrap / ng-bootstrap”:1 ^ 6。0, “引导”:“^ 4。4 . 1”,

如果你想更改默认值:

对于引导3.x:

$.fn.modal.prototype.constructor.Constructor.DEFAULTS.backdrop = 'static';
$.fn.modal.prototype.constructor.Constructor.DEFAULTS.keyboard =  false;

对于bootstrap 4。X和5.x:

$.fn.modal.prototype.constructor.Constructor.Default.backdrop = 'static';
$.fn.modal.prototype.constructor.Constructor.Default.keyboard =  false;

根据你想要的屏幕宽度添加下面的css。

@media (min-width: 991px){
    .modal-dialog {
        margin: 0px 179px !important;
    }
}