当前位置：极客教程 > JavaScript > JavaScript 精品文章 > 使用HTML CSS和JavaScript的员工数据库管理系统

使用HTML CSS和JavaScript的员工数据库管理系统

使用HTML CSS和JavaScript的员工数据库管理系统

在本文中，我们将使用JavaScript构建一个员工数据库管理系统。

员工数据库管理系统是员工数据的集合，例如姓名、姓氏、电子邮件、联系电话、工资和出生日期等。它提供了一种方便的方式来访问和管理员工列表。可以使用有效的详细信息添加新员工，并可以从数据库中删除。

完成后，它将如下所示：

使用HTML CSS和JavaScript的员工数据库管理系统

方法

  • 首先使用员工数据（如名字、姓氏、电子邮件、联系电话、出生日期、工资和可选配置文件图片）创建样本数据库，并将所有数据存储在data.json文件中，如下所示的代码。
  • 创建一个基本的网页结构，使用html和data.json文件中的数据显示虚拟html页面，包括标题和添加员工按钮的标头标签，以及用于获取新用户数据的表单和输入，以及用于显示员工数据的divs、spans和相关类别和ID。
  • 使用CSS属性为网页设置样式，使用类名、ID和元素，包括box-sizing、margin、padding、背景颜色、显示、游标、边框、字体等随时获取、overflow等的属性。
  • 使用JavaScript使用fetch（）函数从data.json文件中获取所有日期，并使用HTML dom方法将其呈现到网页上。
  • 使用addEventListener方法将单击事件添加到添加员工按钮上，并将其链接到以用户输入为参数并向数据库添加新员工数据的回调函数，并使用renderemployees函数重新呈现页面上的所有数据。
  • 定义一个名为renderSingleEmployee的函数，它获取员工ID并在侧边栏上显示所有数据。
  • 使用deleteEmployee函数将点击事件链接到交叉符号，以使用array.filter方法从数据库中删除特定员工数据。

示例：

JavaScript

(async function () { 
    const data = await fetch("data.json"); 
    const res = await data.json(); 
  
    let employees = res; 
    let selectedEmployeeId = employees[0].id; 
    let selectedEmployee = employees[0]; 
  
    const employeeList = document.querySelector( 
        ".employees__names--list"
    ); 
    const employeeInfo = document.querySelector( 
        ".employees__single--info"
    ); 
  
    // Add Employee - START 
    const createEmployee = document.querySelector( 
        ".createEmployee"
    ); 
    const addEmployeeModal = 
        document.querySelector(".addEmployee"); 
    const addEmployeeForm = document.querySelector( 
        ".addEmployee_create"
    ); 
  
    createEmployee.addEventListener("click", () => { 
        addEmployeeModal.style.display = "flex"; 
    }); 
  
    addEmployeeModal.addEventListener("click", (e) => { 
        if (e.target.className === "addEmployee") { 
            addEmployeeModal.style.display = "none"; 
        } 
    }); 
  
    // Set Employee age to be entered minimum 18 years 
    const dobInput = document.querySelector( 
        ".addEmployee_create--dob"
    ); 
    dobInput.max = `{ 
        new Date().getFullYear() - 18 
    }-{new Date().toISOString().slice(5, 10)}`; 
  
    addEmployeeForm.addEventListener("submit", (e) => { 
        e.preventDefault(); 
        const formData = new FormData(addEmployeeForm); 
        const values = [...formData.entries()]; 
        let empData = {}; 
        values.forEach((val) => { 
            empData[val[0]] = val[1]; 
        }); 
        empData.id = employees[employees.length - 1].id + 1; 
        empData.age = 
            new Date().getFullYear() - 
            parseInt(empData.dob.slice(0, 4), 10); 
        empData.imageUrl = 
            empData.imageUrl || 
"gfg.png"; 
        employees.push(empData); 
        renderEmployees(); 
        addEmployeeForm.reset(); 
        addEmployeeModal.style.display = "none"; 
    }); 
    // Add Employee - END 
  
    // Select Employee Logic - START 
    employeeList.addEventListener("click", (e) => { 
        if ( 
            e.target.tagName === "SPAN" && 
            selectedEmployeeId !== e.target.id 
        ) { 
            selectedEmployeeId = e.target.id; 
            renderEmployees(); 
            renderSingleEmployee(); 
        } 
        // Employee Delete Logic - START 
        if (e.target.tagName === "I") { 
            employees = employees.filter( 
                (emp) => 
                    String(emp.id) !== 
                    e.target.parentNode.id 
            ); 
            if ( 
                String(selectedEmployeeId) === 
                e.target.parentNode.id 
            ) { 
                selectedEmployeeId = employees[0]?.id || -1; 
                selectedEmployee = employees[0] || {}; 
                renderSingleEmployee(); 
            } 
            renderEmployees(); 
        } 
        // Employee Delete Logic - END 
    }); 
    // Select Employee Logic - END 
  
    // Render All Employees Logic - START 
    const renderEmployees = () => { 
        employeeList.innerHTML = ""; 
        employees.forEach((emp) => { 
            const employee = document.createElement("span"); 
            employee.classList.add( 
                "employees__names--item"
            ); 
            if ( 
                parseInt(selectedEmployeeId, 10) === emp.id 
            ) { 
                employee.classList.add("selected"); 
                selectedEmployee = emp; 
            } 
            employee.setAttribute("id", emp.id); 
            employee.innerHTML = `{emp.firstName}{emp.lastName}  
                <i class="employeeDelete">&#10060;</i>`; 
            employeeList.append(employee); 
        }); 
    }; 
    // Render All Employees Logic - END 
  
    // Render Single Employee Logic - START 
    const renderSingleEmployee = () => { 
        // Employee Delete Logic - START 
        if (selectedEmployeeId === -1) { 
            employeeInfo.innerHTML = ""; 
            return; 
        } 
        // Employee Delete Logic - END 
  
        employeeInfo.innerHTML = ` 
        <img src="{selectedEmployee.imageUrl}" /> 
        <span class="employees__single--heading"> 
        {selectedEmployee.firstName} {selectedEmployee.lastName}  
            ({selectedEmployee.age}) 
        </span> 
        <span>{selectedEmployee.address}</span> 
        <span>{selectedEmployee.email}</span> 
        <span>Mobile - {selectedEmployee.contactNumber}</span> 
        <span>DOB -{selectedEmployee.dob}</span> 
      `; 
    }; 
    // Render Single Employee Logic - END 
  
    renderEmployees(); 
    if (selectedEmployee) renderSingleEmployee(); 
})();
JavaScript

Javascript

// data.json 
[ 
    { 
        "id": 1001, 
        "imageUrl": "gfg.png", 
        "firstName": "Thomas", 
        "lastName": "Leannon", 
        "email": "Thomas.Leannon@gfg.com", 
        "contactNumber": "4121091095", 
        "age": 43, 
        "dob": "26/08/1979", 
        "salary": 1, 
        "address": "Address1"
    }, 
    { 
        "id": 1002, 
        "imageUrl": "gfg.png", 
        "firstName": "Faye", 
        "lastName": "Sauer", 
        "email": "Faye.Sauergfg.com", 
        "contactNumber": "4914696673", 
        "age": 60, 
        "dob": "28/06/1962", 
        "salary": 2, 
        "address": "Address2"
    }, 
    { 
        "id": 1003, 
        "imageUrl": "gfg.png", 
        "firstName": "Deven", 
        "lastName": "Halvorson", 
        "email": "Deven.Halvorsongfg.com", 
        "contactNumber": "4479795571", 
        "age": 29, 
        "dob": "06/01/1993", 
        "salary": 3, 
        "address": "Address3"
    }, 
    { 
        "id": 1004, 
        "imageUrl": "gfg.png", 
        "firstName": "Melisa", 
        "lastName": "Schuppe", 
        "email": "Melisa.Schuppegfg.com", 
        "contactNumber": "4443995334", 
        "age": 38, 
        "dob": "06/09/1984", 
        "salary": 4, 
        "address": "Address4"
    }, 
    { 
        "id": 1005, 
        "imageUrl": "gfg.png", 
        "firstName": "Dell", 
        "lastName": "Kris", 
        "email": "Dell.Krisgfg.com", 
        "contactNumber": "4505692843", 
        "age": 89, 
        "dob": "14/03/1933", 
        "salary": 5, 
        "address": "Address5"
    }, 
    { 
        "id": 1006, 
        "imageUrl": "gfg.png", 
        "firstName": "Marcia", 
        "lastName": "Gutmann", 
        "email": "Marcia.Gutmanngfg.com", 
        "contactNumber": "4746199430", 
        "age": 56, 
        "dob": "24/07/1966", 
        "salary": 6, 
        "address": "Address6"
    }, 
    { 
        "id": 1007, 
        "imageUrl": "gfg.png", 
        "firstName": "Jarrod", 
        "lastName": "Ortiz", 
        "email": "Jarrod.Ortizgfg.com", 
        "contactNumber": "4859095720", 
        "age": 82, 
        "dob": "26/12/1940", 
        "salary": 7, 
        "address": "Address7"
    }, 
    { 
        "id": 1008, 
        "imageUrl": "gfg.png", 
        "firstName": "Gabriella", 
        "lastName": "Wilkinson", 
        "email": "Gabriella.Wilkinsongfg.com", 
        "contactNumber": "4379190775", 
        "age": 36, 
        "dob": "24/06/1986", 
        "salary": 8, 
        "address": "Address8"
    }, 
    { 
        "id": 1009, 
        "imageUrl": "gfg.png", 
        "firstName": "Elisabeth", 
        "lastName": "Hayes", 
        "email": "Elisabeth.Hayesgfg.com", 
        "contactNumber": "4394091994", 
        "age": 66, 
        "dob": "17/08/1956", 
        "salary": 9, 
        "address": "Address9"
    }, 
    { 
        "id": 1010, 
        "imageUrl": "gfg.png", 
        "firstName": "Jaime", 
        "lastName": "Reichel", 
        "email": "Jaime.Reichelgfg.com", 
        "contactNumber": "4622392580", 
        "age": 41, 
        "dob": "21/01/1981", 
        "salary": 10, 
        "address": "Address10"
    } 
]
JavaScript

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" 
          content="width=device-width, initial-scale=1.0" /> 
    <link rel="stylesheet" href="style.css" /> 
    <title>Employee Database Management System</title> 
</head> 
  
<body> 
    <div id="app"> 
        <header class="header"> 
            <h1>Employee Database Management</h1> 
            <button class="createEmployee"> 
                Add Employee 
            </button> 
        </header> 
  
        <div class="employees"> 
            <div class="employees__names"> 
                <span class="employees__names--title"> 
                      Employee List 
                  </span> 
                <div class="employees__names--list"></div> 
            </div> 
            <div class="employees__single"> 
                <div class="employees__single--title"> 
                    Employee Information 
                </div> 
                <div class="employees__single--info"></div> 
            </div> 
        </div> 
        <!-- Add Employee Code - START -->
        <div class="addEmployee"> 
            <form class="addEmployee_create"> 
                Add a new Employee 
                <div> 
                    <input type="text" name="firstName" 
                           placeholder="First Name" required /> 
                    <input type="text" name="lastName" 
                           placeholder="Last Name" required /> 
                </div> 
                <input type="text" name="imageUrl" 
                       placeholder="Image URL (Optional)" /> 
                <input type="email" name="email" 
                       placeholder="Email" required /> 
                <input type="number" name="contactNumber" 
                       placeholder="Contact" required /> 
                <input type="number" name="salary" 
                       placeholder="Salary" required /> 
                <input type="text" name="address" 
                       placeholder="Address" required /> 
                <input type="date" name="dob" 
                       placeholder="Date of Birth" 
                       class="addEmployee_create--dob" 
                       required /> 
                <input type="submit" 
                       class="addEmployee_create--submit" 
                       value="Submit" /> 
            </form> 
        </div> 
        <!-- Add Employee Code - END -->
    </div> 
  
    <script src="script.js"></script> 
</body> 
  
</html>
HTML

CSS

/* Initial Structural CSS - START */
:root { 
    --btn: #dbdbdb; 
    --btn-hover: #cacaca; 
    --item-bg: #f0f0f0; 
    --modal-bg: rgba(141, 141, 141, 0.541); 
} 
body { 
    font-family: sans-serif; 
    padding: 0 10px; 
} 
.header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
} 
.header > button { 
    padding: 10px 15px; 
    border-radius: 20px; 
    border: none; 
    background-color: var(--btn); 
    cursor: pointer; 
} 
.header > button:hover { 
    background-color: var(--btn-hover); 
} 
.employees { 
    display: flex; 
} 
.employees > div { 
    border: 1px solid black; 
    overflow-y: scroll; 
    height: 450px; 
} 
.employees__names { 
    width: 30%; 
} 
.employees__single { 
    width: 70%; 
} 
.employees__names, 
.employees__single { 
    padding: 10px; 
    display: flex; 
    flex-direction: column; 
} 
.employees__names--title, 
.employees__single--title { 
    padding-bottom: 10px; 
    margin-bottom: 5px; 
    text-align: center; 
    border-bottom: 1px solid black; 
} 
/* Initial Structural CSS - END */
  
/* Render all Employees - START */
.employees__names--list { 
    display: flex; 
    flex-direction: column; 
} 
.employees__names--item { 
    cursor: pointer; 
    padding: 10px 15px; 
    margin-bottom: 5px; 
    text-align: center; 
    background-color: var(--item-bg); 
    border-radius: 10px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
} 
.employees__names--item:hover, 
.selected { 
    background-color: var(--btn); 
} 
/* Render all Employees - END */
  
/* Render Single Employee - START */
.employees__single--heading { 
    text-align: center; 
    font-size: 25px; 
    text-transform: uppercase; 
    padding: 5px; 
} 
.employees__single--info { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 10px; 
} 
.employees__single--info > img { 
    width: 250px; 
    height: 250px; 
    object-fit: contain; 
    border-radius: 50%; 
} 
/* Render Single Employee - END */
  
/* Add Employee - START */
.addEmployee { 
    display: none; 
    width: 100%; 
    height: 100%; 
    position: absolute; 
    top: 0; 
    left: 0; 
    justify-content: center; 
    align-items: center; 
    background-color: var(--modal-bg); 
} 
.addEmployee_create { 
    width: 400px; 
    background-color: white; 
    box-shadow: 0 0 50px grey; 
    padding: 20px; 
    border-radius: 5px; 
    text-align: center; 
    display: flex; 
    flex-direction: column; 
    gap: 15px; 
} 
.addEmployee_create > div { 
    display: grid; 
    grid-template-columns: 48.1% 48.1%; 
    column-gap: 15px; 
} 
.addEmployee_create input { 
    padding: 5px 10px; 
    border-radius: 5px; 
    border: 1px solid rgb(236, 236, 236); 
} 
  
/* removes arrows from input type='number' */
.addEmployee_create input::-webkit-outer-spin-button, 
.addEmployee_create input::-webkit-inner-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
} 
.addEmployee_create--submit { 
    padding: 10px !important; 
    border-radius: 5px; 
    border: none; 
    background-color: var(--btn); 
    cursor: pointer; 
} 
.addEmployee_create--submit:hover { 
    background-color: var(--btn-hover); 
} 
/* Add Employee - END */
CSS

输出：

使用HTML CSS和JavaScript的员工数据库管理系统

Python教程

Python 教程

Python 教程
Tkinter 教程

Tkinter 教程
Pandas 教程

Pandas 教程
NumPy 教程

NumPy 教程
Flask 教程

Flask 教程
Django 教程

Django 教程
PySpark 教程

PySpark 教程
wxPython 教程

wxPython 教程
SymPy 教程

SymPy 教程
Seaborn 教程

Seaborn 教程
SciPy 教程

SciPy 教程
RxPY 教程

RxPY 教程
Pycharm 教程

Pycharm 教程
Pygame 教程

Pygame 教程
PyGTK 教程

PyGTK 教程
PyQt 教程

PyQt 教程
PyQt5 教程

PyQt5 教程
PyTorch 教程

PyTorch 教程
Matplotlib 教程

Matplotlib 教程
Web2py 教程

Web2py 教程
BeautifulSoup 教程

BeautifulSoup 教程

Java教程

Java 教程

Java 教程

Web教程

HTML 教程

HTML 教程
CSS 教程

CSS 教程
CSS3 教程

CSS3 教程
jQuery 教程

jQuery 教程
Ajax 教程

Ajax 教程
AngularJS 教程

AngularJS 教程
TypeScript 教程

TypeScript 教程
WordPress 教程

WordPress 教程
Laravel 教程

Laravel 教程
Next.js 教程

Next.js 教程
PhantomJS 教程

PhantomJS 教程
Three.js 教程

Three.js 教程
Underscore.JS 教程

Underscore.JS 教程
WebGL 教程

WebGL 教程
WebRTC 教程

WebRTC 教程
VueJS 教程

VueJS 教程

数据库教程

SQL 教程

SQL 教程
MySQL 教程

MySQL 教程
MongoDB 教程

MongoDB 教程
PostgreSQL 教程

PostgreSQL 教程
SQLite 教程

SQLite 教程
Redis 教程

Redis 教程
MariaDB 教程

MariaDB 教程

图形图像教程

Vulkan 教程

Vulkan 教程
OpenCV 教程

OpenCV 教程

大数据教程

R语言 教程

R语言 教程

开发工具教程

Git 教程

Git 教程
VSCode 教程

VSCode 教程
Docker 教程

Docker 教程
Gerrit 教程

Gerrit 教程
Excel 教程

Excel 教程

计算机教程

Go语言 教程

Go语言 教程
C++ 教程

C++ 教程

JavaScript 精品教程

登录

找回密码？

注册