abstract：<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>测试文件</title> <script> function cal_words(){ var length&n
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>测试文件</title>
<script>
function cal_words(){
var length = document.getElementById("test").value.length;
document.getElementById("num").innerHTML = length;} </script> </head> <body> <div class="reply"> <textarea id="test" onKeyUp="cal_words()"></textarea> <div>字数：<span id="num">0</span></div> </div> </body> </html>
Correcting teacher：查无此人Correction time：2019-04-11 14:24:57
Teacher's summary：完成的不错，代码很整齐。js是门大语言，除了逻辑，还有动画效果，好好学习。