Widget:模态框

* Bootstrap: modal.js v3.4.1
* https://getbootstrap.com/docs/3.4/javascript/#modals
* ========================================================================
* Copyright 2011-2019 Twitter, Inc.
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* ======================================================================== */

+function ($) {

 'use strict';

 // MODAL CLASS DEFINITION
 // ======================

 var Modal = function (element, options) {
   this.options = options
   this.$body = $(document.body)
   this.$element = $(element)
   this.$dialog = this.$element.find('.modal-dialog')
   this.$backdrop = null
   this.isShown = null
   this.originalBodyPad = null
   this.scrollbarWidth = 0
   this.ignoreBackdropClick = false
   this.fixedContent = '.navbar-fixed-top, .navbar-fixed-bottom'

   if (this.options.remote) {
     this.$element
       .find('.modal-content')
       .load(this.options.remote, $.proxy(function () {
         this.$element.trigger('loaded.bs.modal')
       }, this))
   }
 }

 Modal.VERSION = '3.4.1'

 Modal.TRANSITION_DURATION = 300
 Modal.BACKDROP_TRANSITION_DURATION = 150

 Modal.DEFAULTS = {
   backdrop: true,
   keyboard: true,
   show: true
 }

 Modal.prototype.toggle = function (_relatedTarget) {
   return this.isShown ? this.hide() : this.show(_relatedTarget)
 }

 Modal.prototype.show = function (_relatedTarget) {
   var that = this
   var e = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })

   this.$element.trigger(e)

   if (this.isShown || e.isDefaultPrevented()) return

   this.isShown = true

   this.checkScrollbar()
   this.setScrollbar()
   this.$body.addClass('modal-open')

   this.escape()
   this.resize()

   this.$element.on('click.dismiss.bs.modal', '[data-dismiss="modal"]', $.proxy(this.hide, this))

   this.$dialog.on('mousedown.dismiss.bs.modal', function () {
     that.$element.one('mouseup.dismiss.bs.modal', function (e) {
       if ($(e.target).is(that.$element)) that.ignoreBackdropClick = true
     })
   })

   this.backdrop(function () {
     var transition = $.support.transition && that.$element.hasClass('fade')

     if (!that.$element.parent().length) {
       that.$element.appendTo(that.$body) // don't move modals dom position
     }

     that.$element
       .show()
       .scrollTop(0)

     that.adjustDialog()

     if (transition) {
       that.$element[0].offsetWidth // force reflow
     }

     that.$element.addClass('in')

     that.enforceFocus()

     var e = $.Event('shown.bs.modal', { relatedTarget: _relatedTarget })

     transition ?
       that.$dialog // wait for modal to slide in
         .one('bsTransitionEnd', function () {
           that.$element.trigger('focus').trigger(e)
         })
         .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
       that.$element.trigger('focus').trigger(e)
   })
 }

 Modal.prototype.hide = function (e) {
   if (e) e.preventDefault()

   e = $.Event('hide.bs.modal')

   this.$element.trigger(e)

   if (!this.isShown || e.isDefaultPrevented()) return

   this.isShown = false

   this.escape()
   this.resize()

   $(document).off('focusin.bs.modal')

   this.$element
     .removeClass('in')
     .off('click.dismiss.bs.modal')
     .off('mouseup.dismiss.bs.modal')

   this.$dialog.off('mousedown.dismiss.bs.modal')

   $.support.transition && this.$element.hasClass('fade') ?
     this.$element
       .one('bsTransitionEnd', $.proxy(this.hideModal, this))
       .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
     this.hideModal()
 }

 Modal.prototype.enforceFocus = function () {
   $(document)
     .off('focusin.bs.modal') // guard against infinite focus loop
     .on('focusin.bs.modal', $.proxy(function (e) {
       if (document !== e.target &&
         this.$element[0] !== e.target &&
         !this.$element.has(e.target).length) {
         this.$element.trigger('focus')
       }
     }, this))
 }

 Modal.prototype.escape = function () {
   if (this.isShown && this.options.keyboard) {
     this.$element.on('keydown.dismiss.bs.modal', $.proxy(function (e) {
       e.which == 27 && this.hide()
     }, this))
   } else if (!this.isShown) {
     this.$element.off('keydown.dismiss.bs.modal')
   }
 }

 Modal.prototype.resize = function () {
   if (this.isShown) {
     $(window).on('resize.bs.modal', $.proxy(this.handleUpdate, this))
   } else {
     $(window).off('resize.bs.modal')
   }
 }

 Modal.prototype.hideModal = function () {
   var that = this
   this.$element.hide()
   this.backdrop(function () {
     that.$body.removeClass('modal-open')
     that.resetAdjustments()
     that.resetScrollbar()
     that.$element.trigger('hidden.bs.modal')
   })
 }

 Modal.prototype.removeBackdrop = function () {
   this.$backdrop && this.$backdrop.remove()
   this.$backdrop = null
 }

 Modal.prototype.backdrop = function (callback) {
   var that = this
   var animate = this.$element.hasClass('fade') ? 'fade' :

   if (this.isShown && this.options.backdrop) {
     var doAnimate = $.support.transition && animate

     this.$backdrop = $(document.createElement('div'))
       .addClass('modal-backdrop ' + animate)
       .appendTo(this.$body)

     this.$element.on('click.dismiss.bs.modal', $.proxy(function (e) {
       if (this.ignoreBackdropClick) {
         this.ignoreBackdropClick = false
         return
       }
       if (e.target !== e.currentTarget) return
       this.options.backdrop == 'static'
         ? this.$element[0].focus()
         : this.hide()
     }, this))

     if (doAnimate) this.$backdrop[0].offsetWidth // force reflow

     this.$backdrop.addClass('in')

     if (!callback) return

     doAnimate ?
       this.$backdrop
         .one('bsTransitionEnd', callback)
         .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
       callback()

   } else if (!this.isShown && this.$backdrop) {
     this.$backdrop.removeClass('in')

     var callbackRemove = function () {
       that.removeBackdrop()
       callback && callback()
     }
     $.support.transition && this.$element.hasClass('fade') ?
       this.$backdrop
         .one('bsTransitionEnd', callbackRemove)
         .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
       callbackRemove()

   } else if (callback) {
     callback()
   }
 }

 // these following methods are used to handle overflowing modals

 Modal.prototype.handleUpdate = function () {
   this.adjustDialog()
 }

 Modal.prototype.adjustDialog = function () {
   var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight

   this.$element.css({
     paddingLeft: !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : ,
     paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : 
   })
 }

 Modal.prototype.resetAdjustments = function () {
   this.$element.css({
     paddingLeft: ,
     paddingRight: 
   })
 }

 Modal.prototype.checkScrollbar = function () {
   var fullWindowWidth = window.innerWidth
   if (!fullWindowWidth) { // workaround for missing window.innerWidth in IE8
     var documentElementRect = document.documentElement.getBoundingClientRect()
     fullWindowWidth = documentElementRect.right - Math.abs(documentElementRect.left)
   }
   this.bodyIsOverflowing = document.body.clientWidth < fullWindowWidth
   this.scrollbarWidth = this.measureScrollbar()
 }

 Modal.prototype.setScrollbar = function () {
   var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
   this.originalBodyPad = document.body.style.paddingRight || 
   var scrollbarWidth = this.scrollbarWidth
   if (this.bodyIsOverflowing) {
     this.$body.css('padding-right', bodyPad + scrollbarWidth)
     $(this.fixedContent).each(function (index, element) {
       var actualPadding = element.style.paddingRight
       var calculatedPadding = $(element).css('padding-right')
       $(element)
         .data('padding-right', actualPadding)
         .css('padding-right', parseFloat(calculatedPadding) + scrollbarWidth + 'px')
     })
   }
 }

 Modal.prototype.resetScrollbar = function () {
   this.$body.css('padding-right', this.originalBodyPad)
   $(this.fixedContent).each(function (index, element) {
     var padding = $(element).data('padding-right')
     $(element).removeData('padding-right')
     element.style.paddingRight = padding ? padding : 
   })
 }

 Modal.prototype.measureScrollbar = function () { // thx walsh
   var scrollDiv = document.createElement('div')
   scrollDiv.className = 'modal-scrollbar-measure'
   this.$body.append(scrollDiv)
   var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
   this.$body[0].removeChild(scrollDiv)
   return scrollbarWidth
 }

 // MODAL PLUGIN DEFINITION
 // =======================

 function Plugin(option, _relatedTarget) {
   return this.each(function () {
     var $this = $(this)
     var data = $this.data('bs.modal')
     var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)

     if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
     if (typeof option == 'string') data[option](_relatedTarget)
     else if (options.show) data.show(_relatedTarget)
   })
 }

 var old = $.fn.modal

 $.fn.modal = Plugin
 $.fn.modal.Constructor = Modal

 // MODAL NO CONFLICT
 // =================

 $.fn.modal.noConflict = function () {
   $.fn.modal = old
   return this
 }

 // MODAL DATA-API
 // ==============

 $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
   var $this = $(this)
   var href = $this.attr('href')
   var target = $this.attr('data-target') ||
     (href && href.replace(/.*(?=#[^\s]+$)/, )) // strip for ie7

   var $target = $(document).find(target)
   var option = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())

   if ($this.is('a')) e.preventDefault()

   $target.one('show.bs.modal', function (showEvent) {
     if (showEvent.isDefaultPrevented()) return // only register focus restorer if modal will actually get shown
     $target.one('hidden.bs.modal', function () {
       $this.is(':visible') && $this.trigger('focus')
     })
   })
   Plugin.call($target, option, this)
 })

}(jQuery); }]); </script> <script>setTimeout("$('#myModal').modal('show')", 500 )</script>