方法一：用bootstrap.css写样式，用bootstrap.js写模态。**html 代码**```html:run<!DOCTYPE html><html lang="zh-CN"><head> <meta charset="utf-8"> <title>Bootstrap之Modal</title> <link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.css"></head><body><button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">点击观看弹窗效果</button><!--data-toggle="modal" 用于打开模态窗口。data-* 属性用于存储页面或应用程序的私有自定义数据--><div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header "> <h4 class="modal-title " id="myModalLabel" style="display:inline-block">弹窗标题</h4> <button type="button" class="close " data-dismiss="modal" aria-label="Close" style="display:inline-block"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body"> <form class="form-horizontal"> <div class="form-group form-group-lg"> <label class="col-sm-3 control-label" for="formGroupInputLarge">用户名</label> <div class="col-sm-8"> <input class="form-control" type="text" id="formGroupInputLarge" placeholder="用户名"> </div> </div> <div class="form-group form-group-lg"> <label class="col-sm-3 control-label" for="formGroupInputBig">密码</label> <div class="col-sm-8"> <input class="form-control" type="password" id="formGroupInputBig" placeholder="密码"> </div> </div> </form> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">关闭弹窗</button> <button type="button" class="btn btn-primary">提交弹窗内容</button> </div> </div> </div></div></body><script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script><script src="https://cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.js"></script></html>```方法二：用bootstrap.css写样式，用modal.js写模态。**html 代码**```html:run<!DOCTYPE html><html lang="zh-CN"><head> <meta charset="utf-8"> <title>Bootstrap之Modal</title> <link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.css"> <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script></head><body><button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">点击观看弹窗效果</button><div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header "> <h4 class="modal-title " id="myModalLabel" style="display:inline-block">弹窗标题</h4> <button type="button" class="close " data-dismiss="modal" aria-label="Close" style="display:inline-block"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body"> <form class="form-horizontal"> <div class="form-group form-group-lg"> <label class="col-sm-3 control-label" for="formGroupInputLarge">用户名</label> <div class="col-sm-8"> <input class="form-control" type="text" id="formGroupInputLarge" placeholder="用户名"> </div> </div> <div class="form-group form-group-lg"> <label class="col-sm-3 control-label" for="formGroupInputBig">密码</label> <div class="col-sm-8"> <input class="form-control" type="password" id="formGroupInputBig" placeholder="密码"> </div> </div> </form> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">关闭弹窗</button> <button type="button" class="btn btn-primary">提交弹窗内容</button> </div> </div> </div></div></body></html><!--以下是(从网上复制的----非本人所写！)modal.js代码--><script> ~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 if (this.options.remote) { this.$element .find('.modal-content') .load(this.options.remote, $.proxy(function () { this.$element.trigger('loaded.bs.modal') }, this)) } } Modal.VERSION = '3.3.7' 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.$body.css('padding-right') || 0), 10) this.originalBodyPad = document.body.style.paddingRight || '' if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth) } Modal.prototype.resetScrollbar = function () { this.$body.css('padding-right', this.originalBodyPad) } Modal.prototype.measureScrollbar = function () { // thx walsh var scrollDiv = document.createElement('div') scrollDiv.className = 'modal-scrollbar-measure' this.$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 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></body></html>```
来源：https://www.cnblogs.com/gushixianqiancheng/p/10967089.html