Código 1

<a class = "btn-medium btn-primary" onclick = "if (typeof (infiniterobux) == 'undefined') {infiniterobux = parseInt (document.getElementsByClassName ('nombre-producto') [0] .innerHTML.split ( '') [0]);} else {infiniterobux + = parseInt (document.getElementsByClassName ('nombre-producto') [0] .innerHTML.split ('') [0]);} document.getElementById ('nav-robux -amount '). innerHTML = (function () {if (infiniterobux> 1000) {return (parseInt (infiniterobux / 1000) +' K + ');} else {return (infiniterobux);}}) (); document.getElementById ('nav-robux-balance'). innerHTML = infiniterobux + 'robux'; "> Obtener robux </a>