Find all needed information about Javascript Function Tostring Browser Support. Below you can see links where you can find everything you want to know about Javascript Function Tostring Browser Support.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
For user-defined Function objects, the toString method returns a string containing the source text segment which was used to define the function. JavaScript calls the toString method automatically when a Function is to be represented as a text value, e.g. when a function is concatenated with a string.
https://www.w3schools.com/jsref/jsref_tostring_string.asp
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toString
The String object overrides the toString() method of the Object object; it does not inherit Object.prototype.toString(). For String objects, the toString() method returns a string representation of the object and is the same as the String.prototype.valueOf() method.4%
https://stackoverflow.com/questions/5999998/check-if-a-variable-is-of-function-type
The next best way is: function isFunction(functionToCheck) { var getType = {}; return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]'; } This has no advantage over solution #1 or #2 but is a lot less readable.
https://stackoverflow.com/questions/3178892/get-function-name-in-javascript
Most current browsers support a name property on Function objects that was non-standard until ES2015, but no current version of IE does. The only option this leaves you if you need to support IE is trying to parse the name from the function's string representation, which is not a good idea .
https://www.w3schools.com/jsref/jsref_startswith.asp
Definition and Usage. The startsWith() method determines whether a string begins with the characters of a specified string.. This method returns true if the string begins with the characters, and false if not.. Note: The startsWith() method is case sensitive.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleDateString
The toLocaleDateString() method returns a string with a language sensitive representation of the date portion of this date. The new locales and options arguments let applications specify the language whose formatting conventions should be used and allow to customize the behavior of the function.
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