代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=2.0, user-scalable=yes" />
<title>中文 - Unicode 互转</title>
<link rel="shortcut icon" href="https://chsengni.gitee.io/img/favicon.ico" />
<link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.3/css/bootstrap.min.css" rel="stylesheet">
<style> html{
height:100%;} body{
min-height:100%;margin:0;padding:0;position:relative;}footer{
position:absolute;bottom:0;width:100%;height:100px;} </style>
</head>
<body>
<div class="col"><div class="page-header mt-5"><h5>中文 - Unicode 互转工具</h5></div><div class="form-group input-group"><input type="text" class="form-control" id="text"><div class="input-group-append" id="myDropdown"><input type="button" class="btn btn-outline-secondary dropdown-toggle" data-toggle="dropdown" id="buttontext" value="中文转Unicode"/><input type="password" hidden="hidden" disabled="disabled" value="" id="type"><div class="dropdown-menu dropdown-menu-right" id="dropdown-menu"><a href="javascript:;" class="dropdown-item" id="c2u">中文转Unicode</a><a href="javascript:;" class="dropdown-item" id="u2c">Unicode转中文</a></div></div><div class="input-group-append"><button class="btn btn-info" onclick="convert();">转换</button></div></div><div class="form-group input-group "><div class="input-group-prepend"><span class="input-group-text">转换结果：</span></div><input type="text" class="form-control" id="result"><div class="input-group-append"><button class="input-group-text" id="copyBtn">复制</button></div></div>
</div>
<footer class="navbar-fixed-bottom footer"><div class="container text-center">design by <a href="mailto:chsengni@163.com">Chenzenglin@2021</a></div>
</footer>
<script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script type="text/javascript" src="https://cdn.bootcss.com/popper.js/1.15.0/umd/popper.js"></script>
<script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.3/js/bootstrap.min.js"></script>
<script> // 转为unicode 编码 function encodeUnicode(str) {
var res = [];for ( var i=0; i<str.length; i++ ) {
res[i] = ( "00" + str.charCodeAt(i).toString(16) ).slice(-4);}return "\\u" + res.join("\\u"); }// 解码 function decodeUnicode(str) {
str = str.replace(/\\/g, "%");return unescape(str); }$("#c2u").css("display","none"); $("#type").val("0");$("#c2u").click(function(){
$("#buttontext").val("中文转Unicode");$("#c2u").css("display","none");$("#u2c").removeAttr("style");$("#type").val("0"); });$("#u2c").click(function(){
$("#buttontext").val("Unicode转中文");$("#u2c").css("display","none");$("#c2u").removeAttr("style");$("#type").val("1"); });function convert(){
var type = $("#type").val();var content=$("#text").val();var str = "";if( content!= ""){
if(type == 0){
str = encodeUnicode(content);}if(type==1){
str = decodeUnicode(content);}$("#result").val(str);} }function copyToClipboard (text) {
if(text.indexOf('-') !== -1) {
let arr = text.split('-');text = arr[0] + arr[1];}var textArea = document.createElement("textarea");textArea.style.position = 'fixed';textArea.style.top = '0';textArea.style.left = '0';textArea.style.width = '2em';textArea.style.height = '2em';textArea.style.padding = '0';textArea.style.border = 'none';textArea.style.outline = 'none';textArea.style.boxShadow = 'none';textArea.style.background = 'transparent';textArea.value = text;document.body.appendChild(textArea);textArea.select();try {
var successful = document.execCommand('copy');var msg = successful ? '复制成功' : '复制失败';$("#copyBtn").text(msg)} catch (err) {
$("#copyBtn").text('复制失败');}document.body.removeChild(textArea); }$('#copyBtn').click(function(){
if($("#result").val()!=""){
copyToClipboard($("#result").val());} }); </script>
</body>
</html>
截图：
