JSFiddle - React, Tailwind, and code Playground

HTML

<div style="border:1px solid #000;margin:10px;padding:10px;" onclick="ShowOrHide()">
    Click This Div<br/>
    <a target="_blank" href="http://q.cnblogs.com">http://q.cnblogs.com</a><br/>
    <a href="javascript:void(0);" onclick="jstest()">jstest</a><br/>
</div>
<div id="test" style="display:none;border:1px solid #000;background-color:#CCC">
test
</div>

JavaScript

function ShowOrHide(){
    var state=$("#test").css("display");
    if(state=="none"){
        $("#test").css("display","");
    }
    else{
        $("#test").css("display","none");
    }
}

function jstest(){
    alert("jstest");
}