Data structures.
HTMLCollection.
textareaObject.value
Not the innerHTML.
Element.ClassName.
OnClick = fn.
Not string “”.
Window.open(URL,name,specs,replace).
________________.
Var input = document.createElement("textarea");.
Var button = document.createElement("button");.
Input.name = "post";.
Input.maxLength = "5000";.
Input.cols = "80";.
Input.rows = "40";.
________________.
.appendChild(newListItem);.
________________.
Append ; in onclick = “fn()<semicolon_here>”________________.
Iterate
Var list= document.getElementsByClassName("events");.
for (var i = 0; i < list.length; i++) {
Console.log(list[i].id);.
Second console output.
}.
________________.
Iterate over elements of class.
[].slice.call(document.querySelectorAll(".outbound")).forEach(function(el, i) {.
Updated:
2026 Aug 19
