strict-mode

There's an old trick ( that I learned on SO ) to catch calling a constructor as a function, i.e. forgetting the new keyword. The following, or something like, it goes in each constructor at the top. if (!(this instanceof arguments.callee)) { throw Error("Constructor called as a function"); } What are the alternatives when you need to "use strict"; ? Can its generic nature be retained? Or do we have to use the name of the constructor in place of arguments.callee ? Mark Kahn arguments.callee itself is deprecated in favor of named function expressions. Although I don't necessarily agree with this

Our Mobile App is getting "TypeError: Attempted to assign to readonly property." only on IOS 8 and the stack traces are not helpful and seem to be in Angular code. This might be happening because of the "use strict" on top level of Angularjs code. My questions are (1) why did it start happening only on IOS8? is this an IOS8 bug? (2) or is this an angular bug surfaced on IOS8? (3) Or maybe we are violating strict mode rules but only IOS8 started to catch them! I am skeptical about the third option because strict mode is supported by other major browsers. I have found one similar reported issue

As far as I know, function foo() { aaa(); } is just var foo = function(){ aaa() } in JavaScript. So adding function foo() { bbb(); } should either overwrite the foo variable, or ignore the second definition - that's not the point. The point is that there should be one variable foo . So, in this example the me variable should not be correctly resolved from inside the methods and it is not in Explorer 8 :-) . I came to this example by trying to wrap them into another closure where ( var ) me would be, but I was surprised that it's not necessary: var foo = { bar1 : function me() { var index = 1;

arguments.callee unfortunatelly deprecated , and using it throws an error in "strict mode". Is there any new proper(standard) alternative for getting function name inside actual function? Or will it be in future plans ECMA6, 7? Recent answer is no more than dirty hack and not acceptable for me answer. And arguments.callee.caller.name not working either (nodejs v7.5.0) Is there any new proper (standard) alternative for getting function name inside actual function? No, there is not. Or will it be in future plans for ES? No, given that there is no need for it. Inside the current function, you