组件开发小例子——网页右下角消息弹出框的实现

      前端开发小例子——网页右下角消息弹出框的实现：包括数据请求及事件功能的实现。在某个指定网页的右下角，每当刷新时，弹出提示框，若有点击“已阅”，后再刷新就不再提醒。

效果图：

【设计思路】

1、创建组件：notice-sxl

2、在notice-sxl -->package.json 中引入依赖

3、在notice-sxl -->template -->notice-sxl.html写模板 ，使用nunjucks进行模板渲染

4、在notice-sxl.js 中使用common-model 获取接口数据

5、在notice-sxl -->example -->notice-sxl.html 中创建实例

具体：

1、创建组件：notice-sxl

    方法详见：使用SPM创建新组件

2、在notice-sxl -->package.json 中引入依赖

   package.json：

{
    "name": "notice-sxl",
    "version": "0.1.0",
    "root": "#",
    "description": "",
    "keywords":[],
    "homepage": "",
    "author": "sxl<sxl@strongsoft.net>",
    "main": "./src/notice-sxl.js",
    
    "repository": {
        "type": "git",
        "url": ""
    },
    "bugs": {
        "url": ""
    },
    "license": "",
    "devDependencies": {},
    "tplDependencies": {},
     "dependencies": {
        "jquery": "<=1.9",
        "backbone": "~1",
        "moment": "~2",
        "observer": "~0",
        "lodash": "~3",
        "moment": "~2",
        "nunjucks-slim":"~1.1",
        "common-model":"~0"
    },
    "scripts": {},
    "tests": ["notice-sxl"],
    "buildArgs": "cmd",
    "output": {
        "notice-sxl.js": "."
    },
    "hostModule": null,
    "assets":null,
    "options": null,
    "optionalDependencies": null
}

3、在notice-sxl -->template -->notice-sxl.html写模板 ，使用nunjucks进行模板渲染

notice-sxl.html：

<div class="message-push-box-container" id="message-push-box-{{key}}" style="bottom: {{bottom}}px">
    <div class="message_push_title" id="message_push_title">
        <div class="title_l"></div>
        <div class="title_c">
        <div class="em">事件提醒</div>
        <span>
            <a  msg="关闭" title="关闭" class="message_push_close closeIcon" key="{{key}}"></a>
        </span>
        </div>
        <div class="title_r"></div>
     </div>

    <div class="message_push_body" id="message_push_body">
     <div class="body_l">
       <div class="body_r">
         <div class="body_c">
            <div class="message_push_container">
                <div class="message_push_container_content">{{content}}</div>
                <div class="message_push_container_time">{{time}}</div>
                <button class="message_push_container_readbtn ss-btn ss-btn-mini ss-btn-primary" key="{{key}}">标为已阅</button>
            </div>
         </div>
       </div>
     </div>
    </div>
 
   <div class="message_push_bottom">
        <div class="bottom_l"></div>
        <div class="bottom_c"></div>
        <div class="bottom_r"></div>
   </div>
</div>

样式：notice-sxl-theme-base.css：

element.style {
    bottom: 30px;
}
.message-push-box-container {
    position:fixed;
    height: 170px;
    width: 325px;
    z-index: 9999;
    right: 10px;
    bottom: 30px;
}
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td, hr, button, article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
    margin: 0;
    padding: 0;
}
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td, hr, button, article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
    margin: 0;
    padding: 0;
}

div {
    display: block;
}
.message-push-box-container .message_push_title {
    height: 34px;
}
.message_push_title {
    position: relative;
    height: 29px;
    _bottom: -2px;
}
.message-push-box-container .message_push_title .title_l {
    width: 8px;
    height: 34px;
    background: url(../assets/notice-sxl/message/tilemap-legtop-left.png) no-repeat left top;
}
.message_push_title .title_l {
    position: absolute;
    left: 0;
    top: 0;
    width: 8px;
    height: 29px;
    overflow: hidden;
}
.message-push-box-container .message_push_title .title_c {
    margin: 0 12px 0 8px;
    height: 34px;
    background: url(../assets/notice-sxl/message/tilemap-legtop-center.png) repeat-x;
}
.message_push_title .title_c {
    position: relative;
    margin: 0 8px;
    height: 29px;
}
.message-push-box-container .message_push_title .title_c .em {
    height: 34px;
    line-height: 34px;
     color: #ffffff; 
    background: url(../assets/notice-sxl/message/gblb.png) no-repeat;
}
.message_push_title .title_c .em {
    position: absolute;
    width: 100%;
    height: 29px;
    line-height: 29px;
    font-weight: bold;
    margin-left: 3px;
    text-indent: 35px;
    font-size: 14px;
}
.message_push_title .title_c span {
    float: right;
    position: relative;
}
/*body, button, input, select, textarea {
    font-size: 12px;
    line-height: 1.5;
    font-family: tahoma,arial,Hiragino Sans GB,5b8b4f53;
}*/
.message-push-box-container .message_push_title .title_c  span a.closeIcon {
    width: 21px;
    height: 21px;
    background: url(../assets/notice-sxl/message/Close.gif) no-repeat;
    background-position: 50% 50%;
    margin: 6px 2px 0 0;
}
.message-push-box-container .message_push_title .title_c span a {
    width: 34px;
    height: 34px;
}
.message_push_title .title_c span a {
    float: left;
    cursor: pointer;
    width: 28px;
    height: 25px;
}
a:hover {
    text-decoration: underline;
}
.message-push-box-container .message_push_title .title_r {
    width: 12px;
    height: 34px;
    background: url(../assets/notice-sxl/message/tilemap-legtop-right.png) no-repeat right top;
}
.message_push_title .title_r {
    position: absolute;
    right: 0;
    top: 0;
    width: 8px;
    height: 29px;
    overflow: hidden;
}
.message_push_body {
    position: relative;
    overflow: hidden;
}
.message-push-box-container .message_push_body .body_l {
    background-image: url(../assets/notice-sxl/message/tilemap-legmid-left.png);
}
.message_push_body .body_l {
    overflow: hidden;
    background-repeat: repeat-y;
    background-position: left;
}
.message-push-box-container .message_push_body .body_r {
    background-image: url(../assets/notice-sxl/message/tilemap-legmid-right.png);
}
.message_push_body .body_r {
    overflow: hidden;
    background-repeat: repeat-y;
    background-position: right;
}
.message-push-box-container .message_push_body .body_c {
    margin: 0 12px 0 8px;
}
.message_push_body .body_c {
    margin: 0 8px;
    overflow: hidden;
}
.message-push-box-container .message_push_body .message_push_container {
    background-color: #fff;
}
.message-push-box-container .message_push_container {
    height: 120px;
}
.message-push-box-container .message_push_container_content {
    height: 89px;
    line-height: 25px;
    font-size: 14px;
    font-family: 微软雅黑;
    color: rgb(0, 52, 92);
    padding: 0px 5px;
    overflow: auto;
}
.message-push-box-container .message_push_container_time {
    height: 30px;
    line-height: 30px;
    font-size: 14px;
    font-family: 微软雅黑;
    color: rgb(0, 52, 92);
    text-align: right;
    padding: 4px 10px 4px 0px;
    overflow: hidden;
}
button.ss-btn.ss-btn-mini, input[type="submit"].ss-btn.ss-btn-mini {
}
button.ss-btn.ss-btn-mini, input[type="submit"].ss-btn.ss-btn-mini {
}
.message-push-box-container .message_push_container_readbtn {
    position: absolute;
    left: 15px;
    bottom: 5px;
    padding-left: 10px;
}
button.ss-btn, input[type="submit"].ss-btn {
}
button.ss-btn, input[type="submit"].ss-btn {
}

.ss-btn {
    border-color: rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.25);
}
.ss-btn-mini {
    padding: 0 6px;
    font-size: 10.5px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
}
.ss-btn {
    display: inline-block;
    padding: 4px 12px;
    margin-bottom: 0;
    font-size: 14px;
    line-height: 20px;
    color: #333333;
    text-align: center;
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
    vertical-align: middle;
    cursor: pointer;
    background-color: #f5f5f5;
    background-image: linear-gradient(to bottom, #ffffff, #e6e6e6);
    background-repeat: repeat-x;
    border: 1px solid #bbbbbb;
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
    border-bottom-color: #a2a2a2;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
    -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
    -moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
}
.ss-btn-primary {
    color: #ffffff;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
    background-color: #006dcc;
    background-image: linear-gradient(to bottom, #0088cc, #0044cc);
    background-repeat: repeat-x;
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
    filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
}

.message-push-box-container .message_push_bottom {
    height: 13px;
}
.message_push_bottom {
    position: relative;
    height: 8px;
    overflow: hidden;
}

.message-push-box-container .message_push_bottom .bottom_l {
    width: 8px;
    height: 13px;
    background-image: url(../assets/notice-sxl/message/tilemap-legfoot-left.png);
}
.message_push_bottom .bottom_l {
    font-size: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    overflow: hidden;
    background-repeat: no-repeat;
    background-position: left bottom;
}

.message-push-box-container .message_push_bottom .bottom_c {
    margin: 0 12px 0 8px;
    height: 13px;
    background: url(../assets/notice-sxl/message/tilemap-legfoot-center.png) repeat-x;
}
.message_push_bottom .bottom_c {
    font-size: 0;
    position: relative;
    height: 8px;
    margin: 0 8px;
    overflow: hidden;
    background-repeat: repeat-x;
    background-position: center bottom;
}

.message-push-box-container .message_push_bottom .bottom_r {
    width: 12px;
    height: 13px;
    background-image: url(../assets/notice-sxl/message/tilemap-legfoot-right.png);
}
.message_push_bottom .bottom_r {
    font-size: 0;
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 8px;
    overflow: hidden;
    background-repeat: no-repeat;
    background-position: right bottom;
}

4、在notice-sxl -->src -->notice-sxl.js 中使用common-model 获取接口数据

notice-sxl.js：

var $ = require('jquery');
/*工具类组件，同underscore*/
var _ = require('lodash');
/*前端mvc组件*/
var backbone = require('backbone');
/*模板组件*/
var nunjucks = require('nunjucks-slim');
/*第三方时间数据处理组件*/
var moment = require('moment'); 
var  CommonModel = require('common-model');

//引入样式文件
require('../css/notice-sxl-theme-base.css');

var NoticeModule = backbone.View.extend({
    
    initialize: function(options) {

        //缓存参数
        this.options = options || {};  //这句参数相关。
        //渲染模板
        // //this.$el集成自backbone,具体参见backbone相关api
        // this.$el.html(nunjucks.render('notice-sxl.html'));
        this._initModel();
        this._initOptions();
        this._distance();//计算距离

    },
    events:{
       "click .message_push_close":"_bindClickClose",
       "click .message_push_container_readbtn":"_readBtnClick"
    },
    //计算距离
    _distance:function(){
           this._dialogHeight = 170;
            this._dialogBottom = 30;
            //弹框数组
            this._dialogArray = [];
    },
    _initModel:function(){
        //请求接口数据的commonModel
        this.commonModel= new CommonModel('basic.data',{isFixedStruct:true});
         //修改接口数据的commonModel（点击已阅）
        this.upEventModel= new CommonModel('basic.basicManage',{isFixedStruct:true});
    },
     _initOptions:function(){
                  //common-model实例化
                  //这是interface_common_model.json里面的接口。
                  var that = this;
                  //发起请求
                  this.commonModel.fetch({
                      basicData:{
                           params:{
                               key: 's_comapi_event_notice',
                               unit_id:'1090'
                               //tic:'123'
                           }
                      }
                  },function(data){
                         //数据判断
                        var dataArr=data[0]&& data[0].length>0?data[0]:[];
                        if (!dataArr&&dataArr.length===0) {
                            return;
                        }
                          //循环遍历
                          // 1.处理
                          // 2.位置的计算
                          // 3.渲染

                          _.each(dataArr,function(data){
                              data.content="已加入"+data.event_unit+"启动的紧急事件："+data.title;
                              data.time=moment(data.send_time).format("YYYY-MM-DD HH:mm:ss");
                              data.id=data.id;
                              data.bottom = that._dialogBottom;
                              data.key=data.id;

                              // 1.处理
                              // 2.位置的计算
                            // this._dialogHeight=170;
                            // this._dialog

                              // 3.渲染
                               that.$el.append(nunjucks.render('notice-sxl.html', data));

                              // var html=nunjucks.render('notice-sxl.html',data);
                              // $("body").append(html);
                            var params = {
                              key: data.id,
                              bottom: that._dialogBottom
                             };
                            that._dialogArray.push(params);
                            that._dialogBottom += that._dialogHeight;
                          });
                          // that._renderResult();      
                  });   
// 日期格式：
// [YYYY-MM-DDTHH:mm:ss,YYYY-MM-DDTHH:mm:ss]
// ['2016-12-01T08:00:00,2016-12-01T22:00:00']
   },
     /**
     * 标为已读
     * @param  {[type]} e [description]
     * @return {[type]}   [description]
     */
        _readBtnClick: function(e) {
            var key = $(e.currentTarget).attr("key"); //获取得到当前的DOM对象
            key = +key;  //累加获取DOM对象的最外层
            var basicData = {
                basicManage: {
                    params: {
                        key: "u_comapi_event_notice"
                    },
                    options: {
                        sendData: {
                            id: key,
                            time: moment().format("YYYY-MM-DDTHH:mm:ss"),
                            is_read: 1
                        },
                        method: "PUT"   //PUT方法
                    }
                }
            };
            var that = this;
            this.upEventModel.fetch(basicData, function(data) {
                //console.log(data);
                that._bindClickClose(e); //点击已阅，后，则关闭消息弹出框
            });
        },

        //关闭消息窗口
        _bindClickClose: function(e) {
            var key = $(e.currentTarget).attr("key"); //获取得到当前的DOM对象
            var flag = 0;
            var that = this;
            _.each(this._dialogArray, function(v, k) {
                if (!flag && v.key === +key) { //如果点击的是当前对象的关闭按钮
                    $("#message-push-box-" + v.key).remove();  //则将当前消息框移除
                    v.removeFlag = true;
                    flag = 1;
                    that._dialogBottom -= that._dialogHeight; //相对应的其余消息框往下堆叠
                }
                if (flag) {  //消息框的堆叠效果
                    that._boxAnimate(v, that);
                }
            });
            this._dialogArray = _.filter(this._dialogArray, function(v) {
                return !v.removeFlag;    //消息框关闭成功的话，从后台数据库缓存中移除相关记录
            });
        },
        //box下降的动画效果
        _boxAnimate: function(v, that) {
            $("#message-push-box-" + v.key).animate({
                bottom: v.bottom - that._dialogHeight
            }, 500, function() {
                v.bottom = v.bottom - that._dialogHeight;
            });
        },
    render: function() {
        //this._renderResult();
    },

    /**
     * 渲染结果
     */
    _renderResult: function(   ) {

        //var datas = this.options.datas || [];
        /*var result = {
            datas: datas
        };*/
        //this.$el.html(nunjucks.render('notice-sxl.html', result));
    },

    dispose: function() {

        //继承自backbone
        this.remove();
    }
});

module.exports = NoticeModule;

5、在notice-sxl -->example -->index.html 中创建实例

index.html ：

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>
        消息提醒
    </title>
    <link rel="stylesheet" type="text/css" href="">
</head>
<body>
<script id="seajsnode" src="../sea-modules/sea.js"></script>
<script src="../sea-modules/seajs-helper.js"></script>

<script>
    seajs.use(['../dist/notice-sxl-debug','jquery'],function(NoticeSxl,$){
        //TODO 示例代码
        var main =  new NoticeSxl({el:'body'});
        main.render();
    });
</script>

</body>
</html>

6. 使用spm引入依赖，以及编译和运行：

   

步骤如下：

1）安装依赖：spm install -e

2）编译：spm build

    （编译好的东西会放在trunk-dist里面）

3）发布：spm app -d

（会出来一个export端口，一般是：4745）

4）在浏览器中输入：http://localhost:4745/examples/index.html  即可运行

如果出错了，出bug了，修改完，重新操作2）步骤。