JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<div class="text">%u6D4B%u8BD5</div>
<div class="text">%u4E2D%u6587</div>

JavaScript

function en(str){
	return escape(str);
}
function de(str){
	return unescape(str);
}

//console.log(en("测试"));
//console.log(en("中文"));
$(".text").each(function(index){
  $(this).html(de($(this).text()));
});