5 ms·
There are only 3 things, which aren't surprising to anyone who has done much js. 1). a list of expressions eg (foo,bar,baz) evaluates to the last one. 2).
by blurbytree 15y ago
There are only 3 things, which aren't surprising to anyone who has done much js.
1). a list of expressions eg (foo,bar,baz) evaluates to the last one.
2). Array(4) creates an empty array of 4 elements
2). Array(4).toString() = ",,,"
- bonobo 15y agoI don't think the comma operator wouldn't be surprising to an experienced js programmer. I can't remember a single piece of serious code where I could see it in use. The same applies to the void operator, I can think of one or two cases at most where it would be useful, but I don't see anyone using it.