jquery实现TODOList
Posted 龙吟浅笑
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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>ToDoList</title> <link rel="stylesheet" type="text/css" href="ToDoList1.css"> <script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script> </head> <body> <div class="ToDoList_page"> <div class="ToDoList_container"> <div id="ToDoList_header">ToDoList: <input type="text" id="ToDoList_add" value="what do you need"> </div> <div class="ToDoList_content">待处理事务</div> <input type=‘checkbox‘ id=‘all_checkbox‘ >select all <div id="ToDoList_events"> </div> <p class="event_count"></p> </div> </div> </div> <script type="text/javascript" src="ToDoList1.js"></script> </body> </html>
js
(function(){ ‘use strict‘; var add_list = $("#ToDoList_add"); var event_context =add_list.val(); var ToDoList_events = $("#ToDoList_events"); var allCheckbox=$("#all_checkbox"); var deleteHtml =‘<a href="javascript:void(0)" class="event_delete">×</a>‘; var i=0; // 增加事件列表 $("#ToDoList_add").bind("keypress",function(event){ if(event.keyCode===13){ i++; var events_list = ‘<div class="events_list" id=list_‘+i+‘></div>‘; var checkboxHtml=‘<input type="checkbox" class="checkboxList" id=event_‘+i+‘></input>‘; ToDoList_events.append(events_list); $("#list_"+i).append(checkboxHtml).append(event_context).append(deleteHtml); // console.log($(".events_list").get(0)); } }); // 全选和全不选 $("#all_checkbox").bind("click",function(){ if(allCheckbox.prop(‘checked‘)){ $(".events_list input").prop("checked",true); $(".events_list").addClass("addline"); }else{ $(".events_list input").prop("checked",false); $(".events_list").removeClass("addline"); } events_count(); }); // 给新增的元素动态绑定事件----事件代理 $("#ToDoList_events").bind("click",function(e){ var eventId=e.target.id; var isChecked=$("#"+eventId).prop("checked"); var eventsAllLength=$(".events_list").size(); var events_selected=$(".events_list input:checked").size(); if(eventsAllLength ===events_selected){ $("#all_checkbox").prop("checked",true); }else{ $("#all_checkbox").prop("checked",false); } if(isChecked){ $("#"+eventId).prop("checked",true); $("#"+eventId).parent(".events_list").addClass("addline"); }else{ $("#"+eventId).prop("checked",false); $("#"+eventId).parent(".events_list").removeClass("addline"); } events_count(); }); // 删除某个事件列表 $("#ToDoList_events").on("click","a",function(){ $(this).parent().remove(); events_count(); }); function events_count(){ var event_length = $("#ToDoList_events input:checked").size(); $(".event_count").html(‘total:‘ + event_length + ‘selected‘); } })();
css
body{ margin: 0px; padding: 0px; font-size:14px; } div .ToDoList_page{ text-align: center; } div .ToDoList_container{ width: 500px; height: 500px; border: 1px solid black; padding-top: 5px; margin-right: auto; margin-left: auto; } .events_list .event_delete{ display: none; } .events_list:hover{ background-color: #cad5eb; } .events_list:hover .event_delete{ display: inline-block; text-decoration: none; cursor: pointer; padding: .3em 1em; } .addline{ text-decoration:line-through; color:red; }
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