Please help me understand how this could happen: I think I’m passing simple strings to a Javascript function, but they are received as form objects! The first argument is the id of the form. The second argument is the name of an input. I’m expecting string string instead. Answer When you concatena…
Tag: arguments
Function Launches before reaching the viewport when passing Arguments?
my question was closed because many people think it is associated with this question Why is the method executed immediately when I use setTimeout? I read all the answers but it doesn’t work for me and second, the question doesn’t contain any explanation to the question I asked: “why it’…
Javascript: How to populate arguments passed to a function?
I have this code that returns cartesian product of three arrays: For example, like this: However, I don’t always want my number series to be made out of three numbers. Sometimes, I want four, five, or any other number. That is why I would like to have an argument that would populate the arguments inside…
A function that works on an HTML page but not on the other one
I have a problem with the snippet below : everything works perfectly when I press the button on the 1st page. But it tells me that “secondPageItems” is not defined when I press the button on the 2nd page. (here every thing works fine because it’s on the same HTML page) Even stranger, if I pu…
Pass an object’s method to a function in Javascript. Is this the correct interpretation of the question?
I was in an interview, and there was this question: When the method X of an object O is passed to a function Y as a parameter, what happens if X contains a reference to ‘this’ and gets executed inside Y? Please provide code examples. Is this code a correct interpretation of the question? Could you…
Alternative syntax to access javascript function arguments
prints Is there a way to access the actual arguments in that case? Answer I would advise against overriding the built-in arguments variable within a function definition. You could spread the expected arguments instead using …vargs. Please take a look at the arguments object over at MDN for more info. Th…
A function creating variable names for parameters that I never gave
I am learning JavaScript from an eloquent book and in the chapter about higher order functions I found this code: I know that the rest parameter …args takes a number of arguments and groups them into an array, but when did I gave any parameter to the arrow function? Does args automatically contain all t…
Javascript arguments shifting
Let’s assume that we have the following function: I understand that data and type are just references to specific values in arguments. But why in the end, data is equal to 3? Answer From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode#Making_eval_and_arguments_simpler: Stri…