JSFiddle - React, Tailwind, and code Playground

JavaScript

function encryption(aString){
    return aString.replace(/a/g, '@').replace(/e/g, '()').replace(/h/g, '#').replace(/l/g,'1').replace(/r/g,'+').replace(/s/g,'$').replace(/v/g,'^').replace(/x/g,'*');
}

alert(encryption('aehlrsvx'));