document.getElementById(\"test\").value
document.getElementById(\"test\").innerHTML
Does the first mean the address and the second mean the value
some HTML elements have an attribute "value", such as some others don't have it.
if you want to modify them, you may use the DOM attribute (used with Javascript) innerHTML (if they have any). this attribute represents the content of an element, so it may be used for elements accepting to nest other element such as ,