原生JavaScript实现模态框的示例代码
原生js封装模态框
最近需要一个模态框,然后一种是提示类的,一种是确认类型,我就想着再网上找一个然后修改一下,结果找到了,但是不深特别合适,我再次基础上在做了修改,对功能有所增强,纯原生写的,没有任何依赖性,适应性比较强,值copy即可使用。
配置:可以在实例化时对options进行参数设置,达到自己想要的效果
示例效果
代码
HTML部分
<head> <meta charset="utf-8"> <title>弹出框</title> </head>
CSS部分
.mask { position: fixed; top: 0; bottom: 0; left: 0; right: 0; /* 遮罩层颜色 */ background: #bfbfbf; opacity: 0.5; } .modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 400px; background-color: aliceblue; border-radius: 5px; z-index: 99; border: 1px solid rgba(0, 0, 0, 0.2); } .modal .modalTitle { height: 50px; box-sizing: content-box; display: flex; align-items: center; justify-content: space-between; border-bottom: 2px solid #eeeeee; padding: 0 16px; } .modalTitle .closeModal { width: 20px; height: 20px; border-radius: 5px; line-height: 20px; text-align: center; font-size: 14px; cursor: pointer; background-image: url('https://typroas.oss-cn-hangzhou.aliyuncs.com/typroaImg/close.png'); background-size: 100% 100%; } .modalTitleText { margin: 0 auto; font-size: 17px; } .modal .main { box-sizing: border-box; padding: 16px; height: calc(100% - 80px); } .modal .footer { height: 50px; text-align: right; box-sizing: border-box; padding-right: 16px; display: flex; align-items: center; justify-content: flex-end; } .footer .btnLeft, .footer .btnRight { width: 120px; height: 35px; text-align: center; line-height: 30px; border: none; border-radius: 0.2rem; margin-left: 8px; background-color: #dddddd; } .footer .btnOk { width: 120px; height: 35px; text-align: center; line-height: 30px; border: none; border-radius: 0.3rem; background-color: #1d73d3; margin: 0 auto; font-size: 17px; color: white; } .footer .btnLeft:hover, .footer .btnRight:hover { background-color: #1D73D3; color: #FFFFFF; }
JS部分
/** * 弹出框 * @param {Object} options 弹出框配置项 */ function Modal(options) { options = Object.assign({ lateRelease: options.lateRelease ? options.lateRelease : false, //是否开启延时关闭 lateReleaseTime: options.lateReleaseTime ? options.lateReleaseTime : 5000, // 延时关闭时间 isCreateOpen: options.isCreateOpen ? options.isCreateOpen : true, //是否创建完毕后就打开弹出框 type: options.type ? options.type : 'hint', // hint:提示框 confirm:确认框 isTopRightcancel: true, // 是否需要右上角小x取消按钮 modalTitle: options.modalTitle ? options.modalTitle : '温馨提示', backgroundColor: options.backgroundColor ? options.backgroundColor : '#fff', // 背景颜色 mask: options.mask ? options.mask : true, //是否显示遮罩层, content: options.content ? options.content : '', //弹框内容 cancelText: options.cancelText ? options.cancelText : '取消', //取消按钮文字 okText: options.okText ? options.okText : '确认', // 确认按钮文字, width: options.width ? options.width : 500, //对话框的宽度 onCancel: options.onCancel ? options.onCancel : this.closeModal, //取消按钮回调,默认是关闭弹框 cancelCallBack: options.cancelCallBack ? options.cancelCallBack : () => { console.log('你点击了取消'); }, //取消回调 onOkCallBack: options.onOkCallBack ? options.onOkCallBack : () => { console.log('你点击了确认'); }, // 确认按钮回调 }, options); this.options = options; // 创建遮罩层 function createMask() { let mask = document.createElement('div') mask.className = 'mask'; document.body.appendChild(mask); } // 创建modal弹框 function createModal(type) { let modal = document.createElement('div'); let modalTitleDom = document.createElement('div'); let main = document.createElement('div'); let footer = document.createElement('div'); let btnLeft; let btnRight; let btnOk; let closeIcon; if (type == 'hint') { btnOk = document.createElement('button'); btnOk.className = 'btnOk'; } else if (type == 'confirm') { btnLeft = document.createElement('button'); btnLeft.className = 'btnLeft'; btnRight = document.createElement('button'); btnRight.className = 'btnRight'; } let { modalTitle, content, cancelText, okText, width, onCancel, onOkCallBack, backgroundColor, cancelCallBack, isTopRightcancel, isCreateOpen } = this.options; modal.className = 'modal'; modal.style.width = width + 'px'; modal.style.backgroundColor = backgroundColor; modalTitleDom.className = 'modalTitle' modalTitleDom.innerHTML = `<span class="modalTitleText">${modalTitle}</span>`; if (isTopRightcancel) { closeIcon = document.createElement('span'); closeIcon.addEventListener('click', closeModal.bind(this)); closeIcon.className = 'closeModal'; modalTitleDom.appendChild(closeIcon); } main.className = 'main'; main.innerHTML = content; footer.className = 'footer'; if (type == 'hint') { btnOk.innerHTML = '确认'; footer.appendChild(btnOk); onCancel = onCancel ? onCancel : this.closeModal; btnOk.addEventListener('click', onCancel.bind(this)); } else if (type == 'confirm') { btnLeft.innerHTML = '取消'; btnRight.innerHTML = '确认'; footer.appendChild(btnLeft); footer.appendChild(btnRight); onCancel = onCancel ? onCancel : this.closeModal; btnLeft.addEventListener('click', onCancel.bind(this)); btnRight.addEventListener('click', onOkCallBack); } modal.appendChild(modalTitleDom); modal.appendChild(main); modal.appendChild(footer); modal.className = 'modal'; this.options.onCancel = onCancel.bind(this); document.body.appendChild(modal); } // 关闭弹框 function closeModal(ev) { options.cancelCallBack(); let target = ev ? ev.path[2] : document.getElementsByClassName('modal')[0]; let { mask } = this.options mask ? document.body.removeChild(document.querySelector('.mask')) : null; document.body.removeChild(target); } /** * 当设置默认打开的时候可手动调用该方法 */ function openModal() { this.init(); } // 初始化 function init() { let { mask } = this.options mask ? createMask() : null this.createModal(this.options.type); } Modal.prototype.init = init; Modal.prototype.createModal = createModal; Modal.prototype.closeModal = closeModal; Modal.prototype.openModal = openModal; // 执行初始化方法 if (this.options.isCreateOpen) { this.init(); if (this.options.lateRelease) { setTimeout(() => { let modal = document.getElementsByClassName('modal')[0]; if(modal){ this.options.onCancel(); } }, this.options.lateReleaseTime); } } } document.getElementById("btn").addEventListener('click', () => { let modal = new Modal({ lateRelease: true, modalTitle: '我是第二个', content: `<p>日常开发中,秒杀下单、抢红包等等业务场景,都需要用到分布式锁。而Redis非常适合作为分布式锁使用。本文将分七个方案展开,跟大家探讨Redis分布式锁的正确使用方式。如果有不正确的地方,欢迎大家指出哈,一起学习一起进步。</p>` }) // modal.closeModal(); // modal.openModal(); })
完整代码
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>弹出框</title> </head> <style type="text/css"> .mask { position: fixed; top: 0; bottom: 0; left: 0; right: 0; /* 遮罩层颜色 */ background: #bfbfbf; opacity: 0.5; } .modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 400px; background-color: aliceblue; border-radius: 5px; z-index: 99; border: 1px solid rgba(0, 0, 0, 0.2); } .modal .modalTitle { height: 50px; box-sizing: content-box; display: flex; align-items: center; justify-content: space-between; border-bottom: 2px solid #eeeeee; padding: 0 16px; } .modalTitle .closeModal { width: 20px; height: 20px; border-radius: 5px; line-height: 20px; text-align: center; font-size: 14px; cursor: pointer; background-image: url('https://typroas.oss-cn-hangzhou.aliyuncs.com/typroaImg/close.png'); background-size: 100% 100%; } .modalTitleText { margin: 0 auto; font-size: 17px; } .modal .main { box-sizing: border-box; padding: 16px; height: calc(100% - 80px); } .modal .footer { height: 50px; text-align: right; box-sizing: border-box; padding-right: 16px; display: flex; align-items: center; justify-content: flex-end; } .footer .btnLeft, .footer .btnRight { width: 120px; height: 35px; text-align: center; line-height: 30px; border: none; border-radius: 0.2rem; margin-left: 8px; background-color: #dddddd; } .footer .btnOk { width: 120px; height: 35px; text-align: center; line-height: 30px; border: none; border-radius: 0.3rem; background-color: #1d73d3; margin: 0 auto; font-size: 17px; color: white; } .footer .btnLeft:hover, .footer .btnRight:hover { background-color: #1D73D3; color: #FFFFFF; } </style> <body> <button type="button" id="btn">弹出</button> <script type="text/javascript"> /** * 弹出框 * @param {Object} options 弹出框配置项 */ function Modal(options) { options = Object.assign({ lateRelease: options.lateRelease ? options.lateRelease : false, //是否开启延时关闭 lateReleaseTime: options.lateReleaseTime ? options.lateReleaseTime : 5000, // 延时关闭时间 isCreateOpen: options.isCreateOpen ? options.isCreateOpen : true, //是否创建完毕后就打开弹出框 type: options.type ? options.type : 'hint', // hint:提示框 confirm:确认框 isTopRightcancel: true, // 是否需要右上角小x取消按钮 modalTitle: options.modalTitle ? options.modalTitle : '温馨提示', backgroundColor: options.backgroundColor ? options.backgroundColor : '#fff', // 背景颜色 mask: options.mask ? options.mask : true, //是否显示遮罩层, content: options.content ? options.content : '', //弹框内容 cancelText: options.cancelText ? options.cancelText : '取消', //取消按钮文字 okText: options.okText ? options.okText : '确认', // 确认按钮文字, width: options.width ? options.width : 500, //对话框的宽度 onCancel: options.onCancel ? options.onCancel : this.closeModal, //取消按钮回调,默认是关闭弹框 cancelCallBack: options.cancelCallBack ? options.cancelCallBack : () => { console.log('你点击了取消'); }, //取消回调 onOkCallBack: options.onOkCallBack ? options.onOkCallBack : () => { console.log('你点击了确认'); }, // 确认按钮回调 }, options); this.options = options; // 创建遮罩层 function createMask() { let mask = document.createElement('div') mask.className = 'mask'; document.body.appendChild(mask); } // 创建modal弹框 function createModal(type) { let modal = document.createElement('div'); let modalTitleDom = document.createElement('div'); let main = document.createElement('div'); let footer = document.createElement('div'); let btnLeft; let btnRight; let btnOk; let closeIcon; if (type == 'hint') { btnOk = document.createElement('button'); btnOk.className = 'btnOk'; } else if (type == 'confirm') { btnLeft = document.createElement('button'); btnLeft.className = 'btnLeft'; btnRight = document.createElement('button'); btnRight.className = 'btnRight'; } let { modalTitle, content, cancelText, okText, width, onCancel, onOkCallBack, backgroundColor, cancelCallBack, isTopRightcancel, isCreateOpen } = this.options; modal.className = 'modal'; modal.style.width = width + 'px'; modal.style.backgroundColor = backgroundColor; modalTitleDom.className = 'modalTitle' modalTitleDom.innerHTML = `<span class="modalTitleText">${modalTitle}</span>`; if (isTopRightcancel) { closeIcon = document.createElement('span'); closeIcon.addEventListener('click', closeModal.bind(this)); closeIcon.className = 'closeModal'; modalTitleDom.appendChild(closeIcon); } main.className = 'main'; main.innerHTML = content; footer.className = 'footer'; if (type == 'hint') { btnOk.innerHTML = '确认'; footer.appendChild(btnOk); onCancel = onCancel ? onCancel : this.closeModal; btnOk.addEventListener('click', onCancel.bind(this)); } else if (type == 'confirm') { btnLeft.innerHTML = '取消'; btnRight.innerHTML = '确认'; footer.appendChild(btnLeft); footer.appendChild(btnRight); onCancel = onCancel ? onCancel : this.closeModal; btnLeft.addEventListener('click', onCancel.bind(this)); btnRight.addEventListener('click', onOkCallBack); } modal.appendChild(modalTitleDom); modal.appendChild(main); modal.appendChild(footer); modal.className = 'modal'; this.options.onCancel = onCancel.bind(this); document.body.appendChild(modal); } // 关闭弹框 function closeModal(ev) { options.cancelCallBack(); let target = ev ? ev.path[2] : document.getElementsByClassName('modal')[0]; let { mask } = this.options mask ? document.body.removeChild(document.querySelector('.mask')) : null; document.body.removeChild(target); } /** * 当设置默认打开的时候可手动调用该方法 */ function openModal() { this.init(); } // 初始化 function init() { let { mask } = this.options mask ? createMask() : null this.createModal(this.options.type); } Modal.prototype.init = init; Modal.prototype.createModal = createModal; Modal.prototype.closeModal = closeModal; Modal.prototype.openModal = openModal; // 执行初始化方法 if (this.options.isCreateOpen) { this.init(); if (this.options.lateRelease) { setTimeout(() => { let modal = document.getElementsByClassName('modal')[0]; if(modal){ this.options.onCancel(); } }, this.options.lateReleaseTime); } } } document.getElementById("btn").addEventListener('click', () => { let modal = new Modal({ lateRelease: true, modalTitle: '我是第二个', content: `<p>日常开发中,秒杀下单、抢红包等等业务场景,都需要用到分布式锁。而Redis非常适合作为分布式锁使用。本文将分七个方案展开,跟大家探讨Redis分布式锁的正确使用方式。如果有不正确的地方,欢迎大家指出哈,一起学习一起进步。</p>` }) // modal.closeModal(); // modal.openModal(); }) </script> </body> </html>
以上就是原生JavaScript实现模态框的示例代码的详细内容,更多关于JavaScript模态框的资料请关注脚本之家其它相关文章!
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