if-statement

问题 I'm a coding newbie and looking for a way to check in jQuery whether the name of a certain variable corresponds to the ID of a div, and if so fire some code. Unfortunately, something about my syntax is off, and I can't figure out what. For a simple example, I want to click a div and store the ID of the div as a variable, and if I click it again the variable gets cleared. Simply assigning another boolean variable is not possible due to the rest of the code, I require the ID-check-thingy or

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I am building a script that will process a URL, and will modify it according to various conditions. I'm not sure what is the best practice to do this; for example, right now, under "Partner A" section, if the category is different than "premiuim", my final_url variable will remain empty. I guess I can make a

问题 I am using the ionic framework to make an app. I want to do an if/else statement like I would in php. Basically if the user does not select an account from the code below then the label after it must not show. <label class="item item-input item-select"> <div class="input-label"> Choose your account </div> <select ng-model="vm.paymentPlanData.matter" ng-change="vm.newAccount()"> <option ng-repeat="account in vm.accounts" value="{{account.matterno}}">{{account.company}}</option> </select> <

问题 I want to perform certain tasks in PHP between Monday 10:00am till Saturday 10:00am and I want to perform other tasks between Saturday 10:30am till Monday 10am. Every week. I am sorry if that's a silly question. Any help would be highly appreciated. 回答1: if you are running a time triggered task run a cron job or if it is a user triggered like website and you want to change page according to day then use if else statement to select task. you can get the time in weekday and hour:minute::second

问题 The script should check the document every time the user clicks a link. If the href is # , the script should show a div with the ID video . (I need this specific piece as a patch for an image gallery. I'm having trouble using the title attribute for specific content for different images in the gallery.) Pseudo code: If user clicks <a> with href="#" Show div #video 回答1: $('a[href="#"]').click(function(){ $("#video").show(); }); 回答2: $('a[href="#"]').click(function(){ $("#videoDiv").show(); });

问题 This is the code. It checks if the file in path exists, if not, it creates the file. I'm getting this error message all the time and I don't know why. Maybe I should close the System.IO.Directory.Exists? If yes, how do I do that? Just so you know, I'm creating a text file. The code If Not (System.IO.Directory.Exists(path)) Then Dim fs3 As FileStream = File.Create(path) End If This is the error message I get: Process can't use the file (path) because some other process is using this file at

问题 Basically a followup on this question. I'm still trying to get a grasp of R's vectorising while trying to speed up a coworkers' code. I've read R inferno and Speed up the loop operation in R. My aim is to speed up the following code, the complete dataset contains ~1000columns by 10.000-1.000.000 rows: df3 <- structure(c("X", "X", "X", "X", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O"), .Dim = c(2L, 8L), .Dimnames = list( c("1", "2"), c("pig_id", "code", "DSFASD32", "SDFSD56",

问题 Basically a followup on this question. I'm still trying to get a grasp of R's vectorising while trying to speed up a coworkers' code. I've read R inferno and Speed up the loop operation in R. My aim is to speed up the following code, the complete dataset contains ~1000columns by 10.000-1.000.000 rows: df3 <- structure(c("X", "X", "X", "X", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O", "O"), .Dim = c(2L, 8L), .Dimnames = list( c("1", "2"), c("pig_id", "code", "DSFASD32", "SDFSD56",

问题 I'm trying to make a function that will compare multiple variables to an integer and output a string of three letters. I was wondering if there was a way to translate this into Python. So say: x = 0 y = 1 z = 3 mylist = [] if x or y or z == 0 : mylist.append("c") if x or y or z == 1 : mylist.append("d") if x or y or z == 2 : mylist.append("e") if x or y or z == 3 : mylist.append("f") which would return a list of ["c", "d", "f"] Is something like this possible? 回答1: You misunderstand how

问题 I'm trying to make a function that will compare multiple variables to an integer and output a string of three letters. I was wondering if there was a way to translate this into Python. So say: x = 0 y = 1 z = 3 mylist = [] if x or y or z == 0 : mylist.append("c") if x or y or z == 1 : mylist.append("d") if x or y or z == 2 : mylist.append("e") if x or y or z == 3 : mylist.append("f") which would return a list of ["c", "d", "f"] Is something like this possible? 回答1: You misunderstand how