[js高手之路]Node.js+jade+mongoose实战todolist(分页,ajax编辑,删除)

 1 doctype html
 2 html
 3     head
 4         meta(charset=‘utf-8‘)
 5         title todolist-by ghostwu
 6         link(rel="stylesheet", href=‘./css/bower_components/bootstrap/dist/css/bootstrap.min.css‘)
 7         script(src="./css/bower_components/jquery/dist/jquery.min.js")
 8         script(src="./css/bower_components/bootstrap/dist/js/bootstrap.min.js")
 9         script(src="./js/index.js")
10     body
11         div.container
12             div.row
13                 div.col-md-offset-2.col-md-8
14                     h3 留言板(node.js+mongodb+mongoose+jade) -by ghostwu
15                 form.form-horizontal(action=‘/add‘)
16                     div.form-group
17                         div.col-md-offset-2.col-md-8
18                             textarea.form-control(name=‘msg‘,cols=60,rows=5)
19                         div.col-md-offset-2.col-md-8
20                             button.btn.btn-primary 发布留言
21                 div.col-md-offset-2.col-md-8
22                     ul.list-group
23                         - for ( var key in msgList ){
24                             li.list-group-item
25                                 span #{msgList[key][‘title‘]}
26                                 a(href=‘/del/id/#{msgList[key]["_id"]}‘)   删除  | 
27                                 input(type=‘hidden‘ value=‘#{msgList[key]["_id"]}‘)
28                                 a(data-toggle=‘modal‘,data-target=‘#editMsg‘,href=‘javascript:;‘) 编辑
29                         - }
30                 div.col-md-offset-2.col-md-8
31                     ul.pagination
32                         - for ( var i = 0; i < page; i++ )
33                             li
34                                 a(href=‘/?p=#{i+1}‘) #{i+1}
35                 input(id=‘curP‘,type=‘hidden‘,value=‘#{curPage}‘)
36                 div.modal.fade#editMsg
37                     div.modal-dialog
38                         div.modal-content
39                             div.modal-header
40                                 button(type=‘button‘,class=‘close‘,data-dismiss=‘modal‘) &times;
41                                 h4.modal-title 编辑信息
42                             div.modal-body
43                                 textarea.form-control(name=‘msg-box‘,cols=60,rows=5)
44                             div.modal-footer
45                                 button(type=‘button‘,class=‘btn btn-default‘,data-dismiss=‘modal‘) 关闭
46                                 button(type=‘button‘,class=‘btn btn-primary‘,data-dismiss=‘modal‘) 更新

 1 $(function(){
 2     /*---------------分页选中判断开始------------*/
 3     var curPage = $( "#curP" ).val();
 4     $( ".pagination a" ).each( function(){
 5         if ( $( this ).text() == curPage ) {
 6             $( this ).parent().addClass( ‘active‘ )
 7                 .siblings( "li" ).removeClass( "active" );
 8         }
 9     } );
10     /*---------------分页选中判断结束------------*/
11 
12     /*---------------获取编辑信息开始------------*/
13     $( "li.list-group-item a:last-child" ).on( ‘click‘, function(){
14         // console.log( $( this ).parent().find( "span" ).text() );
15         var curId = $( this ).parent().find( "input" ).val();
16         $( "#editMsg .modal-body textarea" ).val ( $( this ).parent().find( "span" ).text() );
17         $( "#editMsg" ).find("input").remove();
18         $( "#editMsg" ).append( "<input type=‘hidden‘ value=‘" + curId + "‘ />" );
19     } );
20     /*---------------获取编辑信息结束------------*/
21 
22     /*---------------更新信息开始---------------*/
23     $( ".modal-footer .btn-primary" ).on( "click", function(){
24         var curId = $( this ).parents( ".modal" ).find( ":hidden" ).val();
25         var curMsg = $( this ).parents( ".modal" ).find( "textarea" ).val();
26         $.ajax( {
27             type : ‘GET‘,
28             url : ‘/update‘,
29             data : { ‘id‘ : curId, ‘content‘ : curMsg },
30             success : function( res ){
31                 location.href = ‘http://localhost:3000‘;
32             },
33             error : function( res ){
34                 console.log( res );
35             }
36         } );
37     } )
38     /*---------------更新信息结束---------------*/
39 });

 1 var express = require(‘express‘);
 2 var app = express();
 3 var path = require( ‘path‘ );
 4 var indexRouter = require( ‘./routers/index.js‘ );
 5 var addRouter = require( ‘./routers/add.js‘ );
 6 var delRouter = require( ‘./routers/del.js‘ );
 7 var updateRouter = require( ‘./routers/update.js‘ );
 8 
 9 app.use( ‘/‘, indexRouter );
10 app.use( ‘/add‘, addRouter );
11 app.use( ‘/del‘, delRouter );
12 app.use( ‘/update‘, updateRouter );
13 app.use( express.static( path.join( __dirname, ‘public‘ ) ) );
14 
15 app.set(‘views‘, path.join(__dirname, ‘views‘));
16 app.set(‘view engine‘, ‘jade‘);
17 
18 app.listen( 3000 );
19 console.log( ‘server listening on:‘ + 3000 );

 1 var express = require(‘express‘);
 2 var router = express.Router();
 3 var Message = require(‘../db‘);
 4 
 5 function getAllMsg(curPage, pageSize) {
 6     return new Promise(function (resolve, reject) {
 7         Message.find({}, function (err, msgList) {
 8             resolve(msgList);
 9         }).skip( (curPage - 1) * pageSize ).limit( pageSize ).sort({ ‘listTime‘: -1 });
10     });
11 }
12 
13 function Page( pageSize ) {
14     return new Promise((resolve, reject) => {
15         Message.count({}, (err, nums) => {
16             resolve( Math.ceil( nums / pageSize ) );
17         });
18     });
19 }
20 
21 router.get(‘/‘, function (req, res) {
22     var p = req.query.p || 1; //当前页
23     var pageSize = 5; //每页显示5条数据
24     getAllMsg(p, pageSize).then(function (data) {
25         Page(pageSize).then((nums) => {
26             res.render(‘index‘, {
27                 msgList: data,
28                 page : nums,
29                 curPage : p
30             });
31         });
32     });
33 });
34 
35 module.exports = router;

 1 var express = require(‘express‘);
 2 var router = express.Router();
 3 var Message = require(‘../db‘);
 4 
 5 function updateMsg(msgInfo) {
 6     return new Promise(function (resolve, reject) {
 7         var condition = { ‘_id‘: msgInfo[‘_id‘] };
 8         var data = { ‘title‘: msgInfo[‘title‘], ‘listTime‘: msgInfo[‘listTime‘] };
 9         Message.update(condition, data, function (err, result) {
10             if (err) {
11                 reject( ‘error‘ );
12             } else {
13                 resolve( ‘ok‘ );
14             }
15         });
16     });
17 }
18 
19 router.get(‘/‘, function (req, res) {
20     updateMsg({
21         title: req.query.content,
22         listTime: new Date(),
23         ‘_id‘: req.query.id
24     }).then( function( status ){
25         res.send( status );
26     }, function( status ){
27         res.send( status );
28     });
29 });
30 
31 module.exports = router;

 1 var express = require( ‘express‘ );
 2 var router = express.Router();
 3 var Message = require( ‘../db‘ );
 4 
 5 function delMsg( id ){
 6     Message.remove( { ‘_id‘ : id }, function( err ){
 7         if( err ){
 8             console.log( err );
 9         }else{
10             console.log( ‘success‘ );
11         }
12     });
13 }
14 router.get(‘/id/:id‘, function( req, res ) {
15     delMsg( req.params.id );
16     res.redirect( ‘/‘ );
17 });
18 
19 module.exports = router;