call

问题 I want to call a page (click.php) on a click of a button, click.php executes a php-mysql command that inserts a value into a table. Is there a way to click the button and have the page execute without page load. An example: when you do +1 rep on this website to someones post, Im assuming its database driven and when you give them rep, it adds +1. I want to do something basically like that. Is it possible with php, if not in javascript a way to call that page? 回答1: Look into XMLHttpRequest:

问题 I just noticed that, when I want to pass string as "this" , the type cannot be obtained correctly inside a JavaScript function. Here is an example: var str = 'string value'; if (typeof (str) == 'string') { alert('string outside'); } var fn = function(s) { if (typeof (str) == 'string') { alert('string param'); } if (typeof (this) == 'string') { alert('string this'); } else { alert(typeof(this)); } }; fn.call(str, str); I see 3 messages: "string outside" , "string param" , and "object" . My

问题 got an Default.aspx its Codebehind has a Method: public void DoSomething(){} The Default.aspx has got a UserControl.ascx In the Codebehind of my UserControl.ascx I would like to call my DoSomething() from Default.aspx , but this doesn't works: Default defaultPage = new Default(); defaultPage.DoSomething(); How can I achieve this? ( Default.aspx is also the StartupPage of the Masterpage) 回答1: Default defaultPage = new Default(); would create a new instance of your page, which isn't what you

问题 I am aware that JSF may call a managed bean method a couple of times even if it is called only once in .xhtml. I understand that is due to encode* methods. I would like to ask you to explain the following case to me. I have a JSF file that sort of looks like this: <h:form id="form1"> <h:panelGroup id="output"> ... <h:commandLink...> <f:ajax render=":form1:output"/> </h:commandLink> </h:panelGroup> </h:form> All clear so far; pressing the command link rerenders a part of the page within the

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . In c++, we love to do something in the destructor. But in what kind of situation, destructor will not be called? Examples in the

问题 Is there anyway to do the below without delayed expansion (one line, broken for readability)? %comspec% /v:on /c %windir%\System32\reg.exe import c:\temp\test.reg & if !errorlevel! neq 0 pause If it were an echo, I know that call can be used, but doesn't seem to be available for use with the if . 回答1: One way is to use this older syntax: %comspec% ... & if errorlevel 1 pause In this case, a special variant of if statement is used, one that tests the current errorlevel state. Another option

问题 i have the following code in a module called code_database.py class Entry(): def enter_data(self): self.title = input('enter a title: ') print('enter the code, press ctrl-d to end: ') self.code = sys.stdin.readlines() self.tags = input('enter tags: ') def save_data(self): with open('entry.pickle2', 'ab') as f: pickle.dump(self, f) in idle the class-defined methods work fine: >>> import code_database >>> entry = code_database.Entry() >>> entry.enter_data() enter a title: a enter the code,

问题 Just out of interest , is it possible to call a C module from a java module ? If so , how to do that ? 回答1: yes you can use Java Native Interface to do this: 回答2: Yes, you can do it. Whether you should do it is another matter. On the pro side: Calling C libraries from Java will avoid the need to recode the libraries in Java (but see below). For some computational intensive algorithms, a well-written C implementation may be faster than an equivalently well-written Java version. Some operating

问题 Just out of interest , is it possible to call a C module from a java module ? If so , how to do that ? 回答1: yes you can use Java Native Interface to do this: 回答2: Yes, you can do it. Whether you should do it is another matter. On the pro side: Calling C libraries from Java will avoid the need to recode the libraries in Java (but see below). For some computational intensive algorithms, a well-written C implementation may be faster than an equivalently well-written Java version. Some operating

问题 I'm trying to execute rsync over ssh from a subprocess in a python script to copy images from one server to another. I have a function defined as: def rsyncBookContent(bookIds, serverEnv): bookPaths = "" if len(bookIds) > 1: bookPaths = "{" + ",".join(("book_"+str(x)) for x in bookIds) + "}" else: bookPaths = "book_" + str(bookIds[0]) for host in serverEnv['content.hosts']: args = ["rsync", "-avz", "--include='*/'", "--include='*.jpg'", "--exclude='*'", "-e", "ssh", options.bookDestDir + "/"