Of course it can be accessed as ClassName.var_name, but only from inside the class in which it is defined – that’s because it is defined as private. public static or private static variables are often used for constants. For example, many people don’t like to “hard-code” constants in their code; they like to make a public static or private static variable with a meaningful … Read more
You don’t “use” JavaScript variables in HTML. HTML is not a programming language, it’s a markup language, it just “describes” what the page should look like. If you want to display a variable on the screen, this is done with JavaScript. First, you need somewhere for it to write to: Then you need to update … Read more
This should work with immutable objects. It doesn’t make any sense for mutable objects for example: All the variables would be pointing to the same instance. Probably what you would need in that case is: Or better yet use an array or a Collection.
string must be changed to String. By writing int score you’re trying to declare a new variable that already exists, which you declared before already. Just remove the int part and you will get the assignment you want.
I think you should move the variable declaration to top of block. I.e. to
You can use the typeid operator:
You need to define the variable “lives” outside of the function main, then any function where you want to reference that global variable you say “global lives.” When you are in a function and assign a value to a variable, it assumes it is in the local scope. using “global lives” tells that function to … Read more
You can take advantage of Template Literals and use this syntax: Template literals are enclosed by the back-tick (` `) (grave accent) instead of double or single quotes. This feature has been introduced in ES2015 (ES6). Example How neat is that? Bonus: It also allows for multi-line strings in javascript without escaping, which is great for templates: Browser support: … Read more
If you insist, here is some horrible inspect-based solution. I hope it will inspire you to reevaluate the problem you have and look for another approach.
You can safely use the typeof operator on undefined variables. If it has been assigned any value, including null, typeof will return something other than undefined. typeof always returns a string. Therefore