Ask a question : How to use native js to implement basic functions of adding, deleting, modifying and searching? ? ?
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Contains two files (index.jsp and index.js)
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <!-- Bootstrap --> <link href="resource/bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen"> <link href="resource/bootstrap/css/bootstrap-theme.min.css" rel="stylesheet" media="screen"> <title>JS framework learning</title> </head> <body onload="loadUserDatas()"> <div> <table id="table"> <caption><h2>Exercise 1</h2></caption> <caption> <button type="button" id="user_add" data-toggle="modal" data-target="#myModal" onclick="optionUserData(this);">Add</button> <button type="button" id="user_delete" onclick="optionUserData(this);">Delete</button> <button type="button" id="user_edit" data-toggle="modal" data-target="#myModal" onclick="optionUserData(this);">Edit</button> <button type="button" id="user_find" onclick="optionUserData(this);">Query</button> <input type="text" id="s_code" placeholder="Query by work number"> <input type="text" id="s_userName" placeholder="Query by name"> <input type="text" id="s_all" placeholder="Full text search"> </caption> <thead> <tr> <th>Serial number</th> <th>Work number</th> <th>Name</th> <th>Gender</th> <th>Password</th> <th>Age</th> <th>Date of Birth</th> </tr> </thead> <tbody id="tbody"> </tbody> </table> <!-- Modal Box (Modal) --> <div id="myModal" role="dialog" > <div> <div> <div> <button type="button" data-dismiss="modal" aria-hidden="true"> × </button> <h4 id="myModalLabel"> New user</h4> </div> <div id="modal-body"> <label for="name">Work number:</label> <input type="text" id="m_code" placeholder="Please enter work number"> <label for="name">Name:</label> <input type="text" id="m_userName" placeholder="Please enter a name"> <label for="name">Gender:</label> <input type="text" id="m_sex" placeholder="Please enter a gender"> <label for="name">Password:</label> <input type="text" id="m_passWord" placeholder="Please enter a password"> <label for="name">Age:</label> <input type="text" id="m_age" placeholder="Please enter a age"> <label for="name">Date of birth:</label> <input type="text" id="m_birthday" placeholder="Please enter the date of birth"> </div> <div> <button type="button" data-dismiss="modal">Save</button> <button type="button">Submit changes</button> </div> </div><!-- /.modal-content --> </div><!-- /.modal --> </div> <!-- Related js need to be introduced here, it is very important, please remember--> <script type="text/javascript" src="resource/jquery/jquery.js"></script> <script type="text/javascript" src="resource/bootstrap/js/bootstrap.min.js"></script> <script type="text/javascript" src="index.js"></script> </body> </html> Copy code Copy code//Storage all users var users = users || {}; //Operation type var operateType = ""; //Storage search object var searchUsers = searchUsers || {}; //User constructor method var User = { Create:function(code,userName,sex,passWord,age,birthday){ this.code = code; this.userName = userName; this.sex = sex; this.passWord = password; this.age = age; this.birthday = birthday; }, //Add user addUserData:function(){ if(this.code != ""){ users[this.code] = this; } }, //Delete user deleteUserData:function(){ for(var i in users){ if(this.code == users[i].code){ delete users[i]; } } }, //Edit user editUserData:function(){ for(var i in users){ if(this.code == users[i].code){ users[i].userName = this.userName; users[i].sex = this.sex; users[i].passWord = this.passWord; users[i].birthday = this.birthday; users[i].age = this.age; } } }, //Find user findUserData:function(data){ for(var i in users){ if(data.code.indexOf(users[i].code) >= 0 || data.userName.indexOf(users[i].userName) >= 0){ searchUsers[users[i].code] = users[i]; refreshDatas(searchUsers); } } } } } } }; function New(aClass,aParams){ function new_(){ aClass.Create.apply(this,aParams); } new_.prototype = aClass; return new new_(); } //bootstrap modal box event $('#myModal').on('hide.bs.modal', function () { // Execute some actions... var inputElements = this.getElementsByTagName("input"); var userArr = []; for(var i=0;i<inputElements.length;i++){ userArr[i] = inputElements[i].value; } var user = New(User,userArr); //Add operation if(operateType == "add"){ user.addUserData(); refreshDatas(users); //Edit operation}else if(operateType == "edit"){ user.editUserData(); refreshDatas(users); } }); /** * First loading of page execution method*/ function loadUserDatas(){ var userArray = initUserDatas(); addRowData(userArray); refreshDatas(users); } /** * Initialize user data*/ function initUserDatas(){ var initUser1 = New(User,["1001","Xiaolan","female","1234","13","1991-1-1"]); var initUser2 = New(User,["1002","Xiaoyi","Male","1234","13","1991-1-1"]); var initUser3 = New(User,["1003","Orchid","female","1234","13","1991-1-1"]); var initUser4 = New(User,["1004","laner","female","1234","13","1991-1-1"]); users[initUser1.code] = initUser1; users[initUser2.code] = initUser2; users[initUser3.code] = initUser3; users[initUser4.code] = initUser4; return users; } /** * Add a row of html data to the table*/ function addRowData(datas){ var tbodyElement = document.getElementById("tbody"); var html = ""; var color = "warning"; var flag = true; for(var i in datas){ if(flag){ color = "info"; }else{ color = "warning"; } html = html + "<tr class='"+ color +"'><td style='width:30px;'><input type='checkbox'></td><td id='code'>" + datas[i].code +"</td><td id='userName'>" + datas[i].userName +"</td><td id='sex'>" + datas[i].sex +"</td><td id='passWord'>" + datas[i].passWord +"</td><td id='age'>" + datas[i].age +"</td><td id='birthday'>" + datas[i].birthday +"</td>" +"</tr>"; flag = !flag;//Color conversion} tbodyElement.innerHTML = html; } /** * Refresh user data*/ function refreshDatas(datas){ addRowData(datas); }; /** * Collect a row of data*/ function collectionRowData(param){ var tdElement = param.getElementsByTagName("td"); var userArr = []; for(var i=1;i<tdElement.length;i++){ var temp = tdElement[i].textContent; userArr[i-1] = temp; } var user = New(User,userArr); return user; } /** * User operation method*/ function optionUserData(param){ //Get operation category var optionType = param.getAttribute("id"); if(optionType == "user_add"){ operatorType = "add"; }else if(optionType == "user_delete"){ var checkRowData = isCheckedData(); var user = collectionRowData(checkRowData); user.deleteUserData(); refreshDatas(users); }else if(optionType == "user_edit"){ operatorType = "edit"; var checkRowData = isCheckedData(); var user = collectionRowData(checkRowData); var modal_body = document.getElementById("modal-body"); var inputElements= modal_body.getElementsByTagName("input"); for(var i=0;i<inputElements.length;i++){ var temp = inputElements[i].id.substring(2,inputElements[i].id.length) inputElements[i].value = user[temp]; } }else if(optionType == "user_find"){ var s_code = document.getElementById("s_code").value; var s_userName = document.getElementById("s_userName").value; var s_all= document.getElementById("s_all").value; //Search for data var s_data = s_data || {}; s_data.code = s_code; s_data.userName = s_userName; s_data.all = s_all; var user = New(User,[]); user.findUserData(s_data); }else{ } } /** * Whether to select data, return the row of the selected data*/ function isCheckedData(){ var tbodyElement = document.getElementById("tbody"); var trElements = tbodyElement.getElementsByTagName("tr"); var flag = false; for(var i=0;i<trElements.length;i++){ var inputElement = trElements[i].getElementsByTagName("input")[0]; if(inputElement.checked){ flag = true; return trElements[i]; } } if(!flag){ alert("Please select a record!"); $('#myModal').unbind("on"); } }Reproduction image:
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