You can Disallow closing of #signUp (This should be the id of the modal) modal when clicking outside of modal.
As well as on ESC button.
jQuery('#signUp').on('shown.bs.modal', function() {
    jQuery(this).data('bs.modal').options.backdrop = 'static';// For outside click of modal.
    jQuery(this).data('bs.modal').options.keyboard = false;// For ESC button.
})

You can Disallow closing of #signUp (This should be the id of the modal) modal when clicking outside of modal.
As well as on ESC button.
jQuery('#signUp').on('shown.bs.modal', function() {
    jQuery(this).data('bs.modal').options.backdrop = 'static';// For outside click of modal.
    jQuery(this).data('bs.modal').options.keyboard = false;// For ESC button.
})

你也可以不使用JQuery做到这一点，如下所示:

<div id="myModal">

var modal = document.getElementById('myModal');
modal.backdrop = "static";
modal.keyboard = false;

对我来说有效的解决方法如下:

$('#myModal').modal({backdrop: 'static', keyboard: false})  

背景:禁用点击外部事件

键盘:禁用scape关键字事件

4. For Bootstrap。X，你可以这样做:

$('#modal').data('bs.modal')._config.backdrop = 'static';
$('#modal').data('bs.modal')._config.keyboard = false;

如果你想禁用所有使用jQuery的模态的外部点击，使用这个。在jQuery之后添加这个脚本到你的Javascript。

jQuery(document).ready(function () {
    jQuery('[data-toggle="modal"]').each(function () {
       jQuery(this).attr('data-backdrop','static');
       jQuery(this).attr('data-keyboard','false');
    });
});