下面分享一个js 弹出窗, 分 toast , dialog , load 三种弹窗 , 下面用js css 来实现以下：

首先是js代码 | 采用了 es6 的写法

//公共弹窗加载动画const DIALOG_TOAST = '1', DIALOG_DIALOG = '2', DIALOG_LOAD = '3',class Dialog { constructor(type = DIALOG_DIALOG, dialogContent = '请求失败', wrapClassName = 'common-dialog-wrap', dialogWrapClassName = 'common-dialog-content-wrap', contentClassName = 'common-dialog-content', btnClassName = 'common-btn', btnContent = '确定') { this.type = type; //吐司 if (type == DIALOG_TOAST) { this.dialog = document.createElement('div'); this.dialog.className = 'common-toast'; this.dialog.innerHTML = dialogContent; } //加载动画 else if (type == DIALOG_LOAD) { this.dialog = document.createElement('div'); this.dialog.className = wrapClassName; this.figure = document.createElement('figure'); this.figure.className = 'common-loadGif'; this.img = document.createElement('img'); this.img.src = getAbsolutePath() + '/fenqihui/static/bitmap/travel/loadgif.gif'; this.figure.appendChild(this.img); this.dialog.appendChild(this.figure); } else if (type == DIALOG_DIALOG) { this.dialog = document.createElement('div'); this.dialog.className = wrapClassName; this.dialogWrap = document.createElement('div'); this.dialogWrap.className = dialogWrapClassName; this.conetent = document.createElement('p'); this.conetent.innerHTML = dialogContent; this.conetent.className = contentClassName; this.confirmButton = document.createElement('p'); this.confirmButton.innerHTML = btnContent; this.confirmButton.className = btnClassName; this.dialogWrap.appendChild(this.conetent); this.dialogWrap.appendChild(this.confirmButton); this.dialog.appendChild(this.dialogWrap); this.bindEvent(); } } bindEvent() { this.confirmButton.addEventListener('click', ()=> { this.hide(); }) } show(time) { document.querySelector('body').appendChild(this.dialog); $(this.dialog).css('display', 'block'); if (this.type == DIALOG_TOAST) { setTimeout(()=> { $(this.dialog).css('display', 'none'); }, time); } } hide() { $(this.dialog).css('display', 'none'); }}

css 文件如下：

.common-dialog-wrap { position: fixed; background: rgba(0,0,0,.7); z-index: 100; height: 100%; width: 100%; top: 0;}.common-dialog-content { height: 2rem; border-bottom: 1px solid #ccc7c7; line-height: 2rem; text-align: center; font-size: .65rem;}.common-btn { text-align: center; height: 2rem; color: orange; line-height: 2rem;}.common-dialog-content-wrap{ background: #fff; width: 10rem; height: 4rem; border-radius: 5px; position: fixed; left: 0; top:0; right: 0; bottom: 0; margin: auto;}.common-toast{ height: 1.6rem; width: 4rem; box-sizing: content-box; color: #fff; padding: 0 10px; position: fixed; left: 0; top:0; bottom: 0; right: 0; text-align: center; line-height: 1.6rem; margin: auto; background: rgba(0,0,0,.7); border-radius: 2rem;}.common-loadGif{ height: 4rem; width: 4rem; position: fixed; top:0; left: 0; bottom: 0; right: 0; margin: auto;}.common-loadGif img{ height: 100%; width: 100%; border-radius: 10px;}

使用方式

new Dialog(DIALOG_DIALOG).show() | hide()new Dialog(DIALOG_LOAD).show() | hide()new Dialog(DIALOG_TOAST).show(time : number) | hide()

效果如下

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