JS实现简单打字测试

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本文实例为大家分享了JS实现简单打字测试的具体代码，供大家参考，具体内容如下

需求：实现以下的功能

1.有三个小方块，分别用来当前输入的错误数量、打字的时间和当前的正确率。
2.下方是用来显示测试句子的容器。
3.最后是输入框

具体思路：

点击输入文本区域时，开始测试，会根据用户输入来统计当前的错误数和正确率，时间会减少。当输完整段句子时，会自动更新下一段句子。当时间为0时，游戏结束，文本框不能再输入，然后会统计打字速度。

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" >
 <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..."
 oninput="processCurrentText()"
 onfocus="startGame()"> </textarea>
 </div>
 <button class="restart" onclick="resetValues()">重新开始</button>
 </div>
 <script src="/UploadFiles/2021-04-02/index.js">

CSS部分：


*{
 margin: 0;
 padding: 0;
}
.type_content{
 width: 60%;
 /* height: 440px; */
 border: 1px solid #ccccff;
 max-width: 600px;
 margin: 50px 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: 100px;
 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;
 
}


JS部分：


//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"; 
 
}


测试效果图：


以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

js,打字测试

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