javascript - difference between console.log / document.write and alert

Question

I would know what is the difference between those three lines of code :

console.log("");
document.write("");
alert(""); (or windows.alert("");)

Answer 1

console.log("") outputs whatever is passed as the parameter.
e.g. console.log("test") will output "test" to your console

document.write("") adds whatever you want to html.
e.g. document.write("<p>paragraph</p>") will add a new paragraph to a document

alert("") is a popup alert.