Colon or equal?

Question

In first snippet, should = be used instead of : ?
Or can they be used interchangeably?

Answer 1

Edited
The snippet is correct. But the examples do not illustrate it's usage(it's done in previous lesson examples)
let f = {
myMethod: function(){ //colon syntax
return "From inside my method"
}
}
console.log(f.myMethod())
//not the best example bht works...check the lesson code for a better demo.
function f(){
this.met = function(){// equals syntax
return "from inside method_new"
}
}
console.log(new f().met())
lesson: https://www.sololearn.com/learn/JavaScript/1154/

Answer 2

Which language are you talking about?

Answer 3

thanks it is clear now

Answer 4

i am referring to snippet “methodName : function() { code lines }” in javascript course under title adding methods