jelscript/jellyscript.min.js

An esoteric scripting/programming language (esolang) that's dumb

if(null!=document.querySelector(`script[type="text/jellyscript"]`)){let a=document.querySelector(`script[type="text/jellyscript"]`).innerHTML.split(""),b=[],c=0;for(k=0;99999>k;k++)b[k]=0;a.forEach(a=>{var d=String.fromCharCode;"J"===a?c++:"E"===a?c--:"l"===a?b[c]++:"L"===a?b[c]--:"Y"===a?document.write(d(b[c])):"j"===a?b[c]=prompt():"e"===a?document.write("Hello, World!"):"y"===a?document.write("I love Jelly!"):"_"===a?document.write("&nbsp"):"-"===a?document.write("<br/>"):"S"===a?document.write(b[c]):"A"===a?document.write("<i>Java</i>"):void 0})}