2010年5月16日 · $.fn.plotGraph = function() { // read the table data and generate a graph }; $("#someTable").plotGraph(); On a related note, suppose you had a plugin which could be used either with elements or standalone, and you want to access it as $.myPlugin or $("<selector>").myPlugin() , you can reuse the same function for both.

2013年3月27日 · Theres is a function custom jquery function with another function inside, f.e.: $.fn.slides = function ...

2008年12月3日 · Function expression: var fn=function(){ console.log("Hello"); } fn(); JavaScript has first-class functions, that is, create a function and assign it to a variable just like you create a string or number and assign it to a variable. Here, the fn variable is assigned to a function.

$ = function() { alert('I am in the $ function'); } JQuery is a very famous JavaScript library and they have decided to put their entire framework inside a function named jQuery . To make it easier for people to use the framework and reduce typing the whole word jQuery every single time they want to call the function, they have also created an ...

2022年1月3日 · According to Geeks for Geeks Higher Order Function is: A function is called Higher Order Function if it contains other functions as a parameter or returns a function as an output i.e, the functions that operate with another function are known as Higher order Functions.

2012年8月23日 · Inside that function, the this variable corresponds to the jQuery wrapped set you called your function on. So something like: $.fn.myfunction = function { console.log(this.length); }; $('.foo').myfunction(); ... will flush to the console the number of elements with the class foo.

2013年11月29日 · To send the parameter to function test, you must separate the fn and the parameter. You can use Function.prototype.apply(thisValue, argumentsList). As what I've written, fn.apply(window,parameter||[]) The this value of fn function is window as default. parameter is the arguments list which is ['hello'] in your <button>test('b(hello)')</button ...

2020年3月10日 · How to solve "TypeError: fn is not a function"? Ask Question Asked 5 years ago. Modified 10 days ago.

Technically, fn is a function pointer pointing to "foo", but you don't really see this in Javascript. You should really just write: function foo() { /* ... */ } foo(); As others have pointed out, your assignment makes the foo function "live" only in the scope of fn, so when fn goes out of scope, the function object could in principle be cleaned ...

2013年9月3日 · If I understand right, if I use std::mem_fn, I need to pass an object of the correct type to the function call, i.e. Object o; ftncall std::mem_fun(&Object::function); ftncall(o); Ideally, there would be some way to 'attach' o to that function object, perhaps as a std::weak_ptr, so we know if o got deleted. For example, if there were a way to ...