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JS实现电脑虚拟键盘打字测试
网络编程 2024/11/17 佚名
3 1

这篇blog主要是结合前面两个知识点：JS实现电脑虚拟键盘的操作、JS实现简单打字测试

实现的效果如下：

JS实现电脑虚拟键盘打字测试

具体代码如下：

Html部分：

<!DOCTYPE html>
<html lang="en">

<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <link rel="stylesheet" href="./index.css" >
 <link rel="stylesheet" href="./keyBoard..css" >
 <title>打字测试</title>
</head>

<body>
 <div class="type_content">
  <h3>打字测试</h3>
  <ul class="type_box">
   <li class="error_box">
    <p class="error">错误</p>
    <p class="error_text">0</p>
   </li>
   <li class="time_box">
    <p style="margin: 10px;">时间</p>
    <p class="time_text">60s</p>
   </li>
   <li class="currcorrect_box">
    <p style="margin: 10px;">当前准确率%</p>
    <p class="currcorrect_text">100</p>
   </li>
   <li class="type_speed">
    <p style="margin: 10px;">打字速度</p>
    <p class="type_speed_text">30个/分</p>
   </li>
  </ul>
  <div class="text_box">点击下放文本输入框开始打字！！！</div>
  <div class="text_area">
  <textarea name="" id="textarea_box" placeholder="start typing here..."> </textarea>
  </div>
  <button class="restart" onclick="resetValues()">重新开始</button>
 </div>
 <div class="keyBoard">
 
 </div>
 <script src="/UploadFiles/2021-04-02/jquery-1.11.0.min.js">


index.css：





*{
 margin: 0;
 padding: 0;
}
.type_content{
 width: 60%;
 /* height: 440px; */
 border: 1px solid #ccccff;
 max-width: 600px;
 margin: 10px auto;
 border-radius: 8px;
 position: relative;
 min-width: 500px;
}
.type_content h3{
 text-align: center;
 margin: 10px 0px;
}
.type_box{
 list-style: none;
 width: 90%;
 height: 100px;
 /* border: 1px solid black; */
 margin: 0 auto;
 margin-bottom: 10px;
 display: flex;
 align-items: center;
 justify-content: space-around;
}
.type_box li{
 width: 88px;
 height: 88px;
 /* border: 1px solid black; */
 text-align: center;
 font-size: 16px;
 border-radius: 8px;
 /* color: #fff; */
}
.error_box{
 background-color: #ccffcc;
 color: red;
}
.time_box{
 background-color: #66ffff;
 color: #000033;
}
.currcorrect_box{
 background-color: #FFC125;
 color: #fff;
}
.type_speed{
 background-color: #FF4040;
 color: #fff;
 display: none;
}
.final_correct{
 background-color: #E3E3E3;
 color: #555555;
 display: none;
}
.error{
 margin: 10px;
}
.text_box{
 width: 80%;
 /* height: 50px; */
 margin: 20px auto 40px auto;
 /* border: 1px solid black; */
 background-color: #D1EEEE;
 color: #000;
 border-radius: 6px;
 /* text-align: center; */
 line-height: 40px;
 padding: 0px 5px;
 /* box-sizing: border-box; */
}
.text_area{
 width: 80%;
 height: 50px;
 margin: 0px auto;
 padding-bottom: 50px;
 margin-bottom: 30px;
 
}
#textarea_box{
 resize:none;
 width: 100%;
 height: 100%;
 padding: 6px 10px;
 font-size: 16px;
 border-radius: 6px;
 outline: none;
 border: none;
 border: 2px solid #eee;
} 
.incorrect_char { 
 color: red; 
 text-decoration: underline; 
 } 
 
 .correct_char { 
 color: #9B30FF; 
 }
 .restart{
  width: 120px;
  height: 40px;
  display: none;
  border: none;
  outline: none;
  cursor: pointer;
  color: #fff;
  background-color: #9900ff;
  border-radius: 6px;
  position: absolute;
  bottom: 10px;
  left: 50%;
  margin-left: -60px;
  
}





keyboard.css:





/* body * {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
 font-family: Arial, Helvetica, sans-serif;
} */
.keyBoard{
 max-width: 800px;
 padding: 20px;
 position: absolute;
 /* top: 50%;
 left: 50%;
 transform: translate(-50%, -50%); */
 background-color: rgb(197, 197, 197);
 border-radius: 10px;
 display: none;
 grid-template-columns: repeat(30, 20px);
 grid-template-rows: repeat(5, 30px);
 grid-gap: 5px;
 margin-left: 20%;

}
.key {
 background-color: rgb(243, 243, 243);
 border: 2px solid black;
 border-radius: 5px;
 grid-column: span 2;
 font-size: 12px;
 text-align: center;
 /* padding-top: 17px; */
 cursor: pointer;
 line-height: 30px;
 font-weight: 700;
}

.key:hover {
 border: 1px solid #eeeeee;
 
 
}

.backspace {
 grid-column: span 4;
}

.tab {
 grid-column: span 3;
}

.backslash {
 grid-column: span 3;
}

.capslock {
 grid-column: span 4;
}

.enter {
 grid-column: span 4;
}

.leftshift {
 grid-column: span 5;
}

.rightshift {
 grid-column: span 5;
}

.leftctrl {
 grid-column: span 3;
}

.microsoft {
 grid-column: span 3;
 font-size: 14px;
 
}

.space {
 grid-column: span 13;
}
.input_box{
 width: 400px;
 height: 60px;
 /* border: 1px solid black; */
 margin: auto;
 margin-top: 100px;
}
.input_box input{
 outline: none;
 border: none;
 width: 100%;
 height: 100%;
 border: 2px solid #ccc;
 border-radius: 8px;
 padding: 10px;
 font-size: 30px;
}





index.js:





//定义测试时间
var testTime = 60;
//定义测试的句子
var testSentence = [
 "Push yourself, because no one else is going to do it for you.",
 "Failure is the condiment that gives success its flavor.",
 // "Wake up with determination. Go to bed with satisfaction.",
 // "It's going to be hard, but hard does not mean impossible.",
 // "Learning never exhausts the mind.",
 // "The only way to do great work is to love what you do."
]
//定义dom
//1.错误dom
var error_text = document.querySelector('.error_text');
//2.时间dom
var time_text = document.querySelector('.time_text');
//3.当前正确率
var currcorrect_text = document.querySelector('.currcorrect_text');
//4.打字速度
var type_speed_text = document.querySelector('.type_speed_text');

//打字速度父dom
var type_speed = document.querySelector('.type_speed');


//句子dom
var text_box = document.querySelector('.text_box');
//输入
var textarea_box = document.querySelector('#textarea_box');
//按钮
var restart = document.querySelector('.restart')
var timeLeft = testTime;
//当前句子
var currentSentence = "";
//默认开始是索引为0
var startIndex = 0;
//错误统计
var errors = 0;
var characterTyped = 0;
//总错误
var total_errors = 0; 
var timer = null;
var timeElapsed = 0; //已用时间
var accuracy = 0;//正确个数
//更新渲染句子
function updateSentence(){
 text_box.textContent = null;
 currentSentence = testSentence[startIndex];
 //句子拆分
 var newChar = currentSentence.split('');
 for(var i = 0; i < newChar.length; i++){
  var charSpan = document.createElement('span');
  charSpan.innerText = newChar[i];
  text_box.appendChild(charSpan)
 }
 if(startIndex < testSentence.length - 1){
  startIndex++;
 }else{
  startIndex = 0
 }
}
//输入当前正确的句子
function processCurrentText(){
 curr_input = textarea_box.value;
 curr_input_array = curr_input.split('');
 // console.log(curr_input_array);
 characterTyped++;
 errors = 0;
 quoteSpanArray = text_box.querySelectorAll('span');
 // console.log(quoteSpanArray);
 quoteSpanArray.forEach((char,index)=>{
  var typeChar = curr_input_array[index];
  //当前没有输入
  if(typeChar == null){
   char.classList.remove('correct_char'); 
   char.classList.remove('incorrect_char'); 
  }else if(typeChar === char.innerText){
   //正确的输入
   char.classList.add('correct_char'); 
   char.classList.remove('incorrect_char'); 
  }else{
   //不正确的输入
   char.classList.add('incorrect_char'); 
    char.classList.remove('correct_char');
    errors++; 
  }
 })
 error_text.textContent = total_errors + errors; 
 console.log(characterTyped)
 console.log(error_text.textContent)
 var correctCharacters = (characterTyped - (total_errors + errors)); 
 var accuracyVal = ((correctCharacters / characterTyped) * 100); 
 console.log(accuracyVal)
 currcorrect_text.textContent = Math.round(accuracyVal); 
 //输入结束
 if(curr_input.length == currentSentence.length){
  updateSentence(); 
  total_errors += errors; 
  textarea_box.value = ""
 }
}
//开始游戏
function startGame(){
 resetValues(); 
 updateSentence(); 
 
 // clear old and start a new timer 
 clearInterval(timer); 
 timer = setInterval(updateTimer, 1000); 
}
//重新开始
function resetValues(){
 timeLeft = testTime;
 timeElapsed = 0;
 errors = 0;
 total_errors = 0;
 accuracy = 0;
 characterTyped = 0;
 startIndex = 0;
 textarea_box.disabled = false;
 textarea_box.value = "";
 text_box.textContent = 'Click on the area below to start the game.'; 
 currcorrect_text.textContent = 100;
 time_text.textContent = timeLeft + 's';
 type_speed.style.display = 'none';
 
}
//更新时间
function updateTimer() { 
 if (timeLeft > 0) { 
  // decrease the current time left 
  timeLeft--; 
 
  // increase the time elapsed 
  timeElapsed++; 
 
  // update the timer text 
  time_text.textContent = timeLeft + "s"; 
 } 
 else { 
  // finish the game 
  finishGame(); 
 } 
 } 
 //游戏结束
 function finishGame() { 
 // stop the timer 
 clearInterval(timer); 
 
 // disable the input area 
 textarea_box.disabled = true; 
 
 // show finishing text 
 text_box.textContent = "可点击下方按钮重新开始！！！"; 
 
 // display restart button 
 restart.style.display = "block"; 
 
 // calculate cpm and wpm 
 console.log(characterTyped,timeElapsed)
 cpm = Math.round(((characterTyped / timeElapsed) * 60)); 
 
 // update cpm and wpm text 
 
 type_speed_text.textContent = cpm + '个/分'; 
 
 // display the cpm and wpm 
 type_speed.style.display = "block"; 
 
 }





keyboard.js:





var keyArray = [
 { 'key_name': '`', 'key_val': '192' },
 { 'key_name': '1', 'key_val': '49' },
 { 'key_name': '2', 'key_val': '50' },
 { 'key_name': '3', 'key_val': '51' },
 { 'key_name': '4', 'key_val': '52' },
 { 'key_name': '5', 'key_val': '53' },
 { 'key_name': '6', 'key_val': '54' },
 { 'key_name': '7', 'key_val': '55' },
 { 'key_name': '8', 'key_val': '56' },
 { 'key_name': '9', 'key_val': '57' },
 { 'key_name': '0', 'key_val': '48' },
 { 'key_name': '-', 'key_val': '189' },
 { 'key_name': '=', 'key_val': '187' },
 { 'key_name': 'Backspace', 'key_val': '8' },

 { 'key_name': 'Tab', 'key_val': '9' },
 { 'key_name': 'Q', 'key_val': '81' },
 { 'key_name': 'W', 'key_val': '87' },
 { 'key_name': 'E', 'key_val': '69' },
 { 'key_name': 'R', 'key_val': '82' },
 { 'key_name': 'T', 'key_val': '84' },
 { 'key_name': 'Y', 'key_val': '89' },
 { 'key_name': 'U', 'key_val': '85' },
 { 'key_name': 'I', 'key_val': '73' },
 { 'key_name': 'O', 'key_val': '79' },
 { 'key_name': 'P', 'key_val': '80' },
 { 'key_name': '[', 'key_val': '219' },
 { 'key_name': ']', 'key_val': '221' },
 { 'key_name': "\\ ", 'key_val': '220' },

 { 'key_name': 'CapsLock', 'key_val': '20' },
 { 'key_name': 'A', 'key_val': '65' },
 { 'key_name': 'S', 'key_val': '83' },
 { 'key_name': 'D', 'key_val': '68' },
 { 'key_name': 'F', 'key_val': '70' },
 { 'key_name': 'G', 'key_val': '71' },
 { 'key_name': 'H', 'key_val': '72' },
 { 'key_name': 'J', 'key_val': '74' },
 { 'key_name': 'K', 'key_val': '75' },
 { 'key_name': 'L', 'key_val': '76' },
 { 'key_name': ';', 'key_val': '186' },
 { 'key_name': "'", 'key_val': '222' },
 { 'key_name': 'Enter', 'key_val': '13' },

 { 'key_name': 'Shift', 'key_val': '16' },
 { 'key_name': 'Z', 'key_val': '90' },
 { 'key_name': 'X', 'key_val': '88' },
 { 'key_name': 'C', 'key_val': '67' },
 { 'key_name': 'V', 'key_val': '86' },
 { 'key_name': 'B', 'key_val': '66' },
 { 'key_name': 'N', 'key_val': '78' },
 { 'key_name': 'M', 'key_val': '77' },
 { 'key_name': ',', 'key_val': '188' },
 { 'key_name': '.', 'key_val': '190' },
 { 'key_name': '/', 'key_val': '191' },
 { 'key_name': 'Shift', 'key_val': '16' },

 { 'key_name': 'Ctrl', 'key_val': '17' },
 { 'key_name': 'Alt', 'key_val': '18' },
 { 'key_name': 'Home', 'key_val': '36 ' },
 { 'key_name': 'Space', 'key_val': '32' },
 { 'key_name': 'Home', 'key_val': '36' },
 { 'key_name': 'Alt', 'key_val': '18' },
 { 'key_name': 'Ctrl', 'key_val': '17' },
 { 'key_name': 'Fn', 'key_val': '00' },

]
var keyBoard = document.getElementsByClassName('keyBoard')[0]
function renderKeyBoard(keyArray) {
 var template = '';
 for (var i = 0; i < keyArray.length; i++) {
  if (keyArray[i].key_val == '8') {
   template += "<div class='key backspace' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '9') {
   template += "<div class='key tab' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '220') {
   template += "<div class='key backslash' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '20') {
   template += "<div class='key capslock' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '13') {
   template += "<div class='key enter' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '16') {
   template += "<div class='key leftshift' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '16') {
   template += "<div class='key rightshift' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '17') {
   template += "<div class='key leftctrl' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  } else if (keyArray[i].key_val == '36') {
   template += "<div class='key microsoft' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  }
  else if (keyArray[i].key_val == '32') {
   template += "<div class='key space' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  }
  else {
   template += "<div class='key' data-key='" + keyArray[i].key_val + "'>" + keyArray[i].key_name + "</div>";
  }


 }
 // console.log(template)
 keyBoard.innerHTML = template;
}
renderKeyBoard(keyArray)
var key_div = document.getElementsByClassName('key');
// console.log(key_div)
$("#textarea_box").on("input", function (e) {
 // console.log(e.keyCode)
 keyBoard.style.display = 'grid'
 processCurrentText()

});
$("#textarea_box").on("focus", function (e) {
 // console.log(e.keyCode)
 keyBoard.style.display = 'grid';
 startGame();

});
$("#textarea_box").on("keydown", function (e) {
  console.log(e.target.value)
 if(e.target.value != ''){
 for (var i = 0; i < key_div.length; i++) {
  var key_val = Number(key_div[i].getAttribute('data-key'));
  if (key_val === e.keyCode) {
   key_div[i].style.color = '#fff';
   key_div[i].style.backgroundColor = '#9F79EE'
  } else {
   key_div[i].style.color = ''
   key_div[i].style.backgroundColor = ''
  }
 }
 }

});
$("#textarea_box").on("keyup", function (e) {
 for (var i = 0; i < key_div.length; i++) {
  key_div[i].style.color = ''
  key_div[i].style.backgroundColor = ''
 }

});
$("#textarea_box").on("blur", function (e) {
 // console.log(e.keyCode)
 keyBoard.style.display = 'none'

});





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