sunagae.net

Sure, I have been using JavaScript. But I do not detail about JavaScript itself.

Things TIL about JavaScript:

• Many semicolons can be omitted.
  • If the end of statement are return, some of semicolons in there can be omitted. (Not at all)
  • I have known that semicolons before end braces can be omitted.
• In contrast, “return true;” becomes “return; true;”
  • There is some cases like this.
• “var” and “function” can be referenced before their declaration because of ROLLING UP.
  • I had not been paying attention about it.
  • I had believed that “function hoge(){” and “hoge = function(){” are equivalence. But it is not. No ROLLING UP in the latter.
• “void” is an operator.
  • It is always evaluated as undefined.
• “debugger” statement
  • Programs break at the statement.
• “bind” Method
  • I had always made closures for doing same.

I haven’t read the latter half about libraries. Of course, probably I do not know large part of them.