All these attempts to do so are syntax errors: Strict mode code doesn't sync indices of the arguments object with each parameter binding. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. Careful review of your code base will probably be necessary to be sure these differences don't affect the semantics of your code. Theres gotta be a way to do this without using a string, but whatever. In strict mode, it is now undefined. Javascript Functions & Parameters | Javascript Tutorial For Beginners, 16.13: async/await Part 1 - Topics of JavaScript/ES8, Can I get the name of the currently running function in JavaScript - JavaScript. What woodwind & brass instruments are most air efficient? Looking for job perks? Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. That's when JS does not have native constants like PHP does with Magic constants @AndyE probably no one pointed it out because once we see a regexp, we enter TL;DR mode and look for other answers ;), Works perfect even for arrow functions, underrated answer. If you're wrapping a function, couldn't you use. If the object is not specified, functions in strict mode are not allow to access their receiver and function objects. How to display error without alert box using JavaScript ? How to get the children of the $(this) selector? In sloppy mode, mistyping a variable in an assignment creates a new property on the global object and continues to "work". Actually, actually paying more attention to your question, it sounds like you might want the extra junk :), This worked for me but I think there's a typo in your regexp. Likewise, to invoke strict mode for a function, put the exact statement "use strict"; (or 'use strict';) in the function's body before any other statements. outputs "test" (in Chrome, Firefox and probably Safari). [NodeJS] Get the current function name or any other function while Why typically people don't use biases in attention mechanism? JavaScript's strict mode is a way to opt in to a restricted variant of JavaScript, thereby implicitly opting-out of "sloppy mode". I already mentioned it. }, 0); }; Alternatively, in newer browsers, you can use the bind () method to pass in the proper reference: Is there any new proper(standard) alternative for getting function name inside actual function? If history has proven anything, then it's the opposite: What works today is about the only thing guaranteed to work in tomorrow's browsers as well. And arguments.callee.caller.name not working either (nodejs v7.5.0). Function.prototype.caller - JavaScript | MDN - Mozilla Developer What is THIS keyword in JavaScript and How to use it with Examples? How to append HTML code to a div using JavaScript ? Looks nice. How do I include a JavaScript file in another JavaScript file? In sloppy mode, assigning to NaN does nothing; the developer receives no failure feedback. in strict mode): The syntax, for declaring strict mode, was designed to be compatible with Returns the current function. It does not refer to the MyFunction's arguments object. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. JavaScript Strict Mode (With Examples) Benefits of using use strict: Strict mode makes several changes to normal JavaScript semantics. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. it's read-only) throws a, Deleting a non-deletable property throws a. How do you run JavaScript script through the Terminal? How to pop an alert message box using PHP ? The arguments inside the error function refers to this method's own arguments object. Word order in a sentence with two clauses, Embedded hyperlinks in a thesis or research paper, English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". Is there any plans to make module standard for nodejs? When I call a method in obj1 object, do I have any way to get my function name (test1) inside of this method, except parsing the source (this.func.toString()) of the function. function functionName (fun) { var ret = fun.toString (); ret = ret.substr ('function '.length); ret = ret.substr (0, ret.indexOf (' (')); return ret; } Note: Using Function.caller is non-standard and arguments.callee is forbidden in strict mode. In strict mode, a function declaration inside a block is only visible inside the block. Strict mode in JavaScript - GeeksforGeeks
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