Ruby has the << concatenation operator. It can be used to push an item to an array (.push() can also be used in Ruby, but it is longer). It is used like this:
array = [1, 2]
array << 3
return array # Will return [1, 2, 3]
Is there a similar Javascript operator to do that, or do I have to use .push()?
Solved: There is no Javascript operator similar to <<. You have to use push (Or create a function with a short name like a and push the only argument it takes)
JavaScript does not support operator overloading and it is language with syntax characteristics quite different from Ruby.
For instance, in Ruby, you can omit parenthesis around parameters while making a function call.
arr << 4
is equivalent to
arr.<<(4)
JavaScript does not allow such flexibility, and hence, what you are asking may not be possible
This is the shortest way I can think of that doesn't use push()
var arr = [1, 2, 3];
arr[arr.length] = 4;
It's also open to being wrong if the length property of arr has been externally manipulated.
arr.length = 100;
For instance. I like the best way would be to use push() but this is an alternative if you'd really like to use it. I'm not sure that a shorter way to push to arrays exists in JS.
arr.push(4).push(), but << is 5 digits shorter. I wanted to find out if a Javascript operator exists. But thanks for the answer anyway!
<<. Thanks for the link anyway!