JSFiddle - React, Tailwind, and code Playground

HTML

<div title="en">title为en的div元素</div>
<div title="en-UK">title为en-UK的div元素</div>
<div title="english">title为english的div元素</div>
<div title="en uk">title为en uk的div元素</div>
<div tilte="uken">title为uken的div元素</div>

CSS

div{
    width:140px;
    height:140px;
    margin:5px;
    background:#aaa;
    border:#000 1px solid;
    float:left;
    font-size:17px;
    font-family:Verdana;
}

JavaScript

$("div[title|='en']").css("background","#bbffaa")