3 replies

question about assigning a function to a variable

I'm testing and trying out some new things I recently learn about functions and I come across something like this

let testFunction = function() {
  console.log('Hello')
}();

let testFunction = function() {
  console.log('Hello')
}();

let testFunction = function() {
  console.log('Hello')
}();

let testFunction = function() {
  console.log('Hello')
}();

now this works and shows the hello on the console. However I decide to take away the

()

()

()

()

at the end and I no longer see the hello on the console.
Then I try this to see if the hello would show up but instead I get two things Hello and undefined. I have an idea of whats going on and I think the

()

()

()

()

in the first statement automatically invoke without being called i think but i'm not sure and I can anybody help me understand why when I console log

testFunction

testFunction

testFunction

testFunction

i get undefined

cosole.log(testFunction())

cosole.log(testFunction())

cosole.log(testFunction())

cosole.log(testFunction())

thanks in advance for your help

question about assigning a function to a variable

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