How to add class to an element create by appendChild [duplicate]

Answer 1

You need a variable for the created element.

var input = document.createElement("input");
input.className = 'class_to_add';
document.forms[0].appendChild(input);

Update:

.appendChild return the child, so you could also do it with out a variable:

document.forms[0].appendChild(document.createElement("input")).className = "class_to_add";