anonymous-function

I want to be able to modify the arguments passed to a self executing function. Here is some sample code: var test = 'start'; (function (t) {t = 'end'} )(test); alert(test) //alerts 'test' And here is a fiddle . The variable test has not changed. How can I alter it, as in pass-by-reference? Pass in an object , it is pass-by-reference : var test = { message: 'start' }; (function (t) {t.message = 'end'} )(test); alert(test.message) FYI, Array is also pass-by-reference . You cannot do that (well, precisely that) in JavaScript. You can do something like this, however: var testBox = { test: "hello"

I'm trying to maintain state on an object by doing something like this: obj = function() { this.foo = undefined; this.changeState = function () { (function () { this.foo = "bar" })(); // This is contrived, but same idea. }; }; I want to set the instance variable foo to "bar" when I call the changeState method. For instance: o = new obj(); o.changeState(); alert(o.foo); // This should say "bar" As far as I can tell, what is happening is that "this" in the inner anonymous function is pointing to window. I'm not sure what's going on. Am I on the right track? Is there a better approach? Unless you

I am clearly missing something fundamental when it comes to jQuery, anonymous functions, and delays. The following code works only ONCE per page load (it will add the class, then remove it after 1 second, and if i click again, it will add the class, but will NEVER remove the class for the duration of the page, unless I reload the page): var jElement = $(currElem); jElement.addClass("highlight") .delay(1000) .queue(function(){ $(this).removeClass("highlight"); }); HOWEVER, if I add the (non-existant) function call as a parameter, AND I call it in my anonymous function, then the add/remove class

I know it's possible to do the following with PHP 5.3 (anonymous functions), but is there a similar alternative in older PHP version (pre-5.3)? $exampleArray = array( 'func' => function() { echo 'this is an example'; } Is it possible to do this with __call or typecasting the function as an (object) first? Also, I tried making the function un-anonymous by giving it a name, but this didn't seem to work. If you want to create anonymous in PHP < 5.3, you can use create_function function. Also Here is interesting information about callbacks (may be usefull). Example using create_function # This

This question already has an answer here: How to execute multiple statements in a MATLAB anonymous function? 6 answers Is it possible to create multiline anonymous function in Matlab? There are no appropriate examples in documentation , but also no direct denials. In web discussions I found some derisions of askers as if it silly wish. Nowadays, when most languages introducing lambda expressions with multiline capability this looks strange. No, unfortunately this is not possible. 来源： https://stackoverflow.com/questions/29180642/multiline-anonymous-function-in-matlab