scope

问题 I have this fiddle, and can not make this work. I believe that the reason resides in that two li elements with a custom directive edit-in-place share scope. The solution would be to say to the directive to create a copy of the scope that binds on the parent - can transclude help? angular.module('bla', []) .directive('editInPlace', ['$parse','$compile', function($parse, $compile) { return { restrict: 'A', scope: true, link: function (scope, element, attribs) { var inputStart = '<input style=

问题 This question already has answers here : How does the “this” keyword work? (22 answers) Closed 3 years ago . I very confusing about the value of this at the moment of an invocation function using arrow functions. Let's take my example: var obj = { property: 5, func1: function () { console.log(this.property); }, func2: () => { console.log(this.property); } } When i put this code on the browser console, an interesting thing happens, func1() will output 5 as expected *, but when i run func2 i

问题 I defined a function inside of a function in a program (Python): def func1: x = 5 def func2(y): return x*y x = 4 print func2(5) How does the scope for x here work, with AND without the line that redefines x=4? Is this language-specific behavior? 回答1: First of all: you're being too lazy. Before you write code here, at least feed it to an interpreter or compiler for the language in question to weed out the obvious problems. In this case, there are two: Your example code won't compile due to a

问题 I am having a problem with a couple R functions I wrote. I have 2 plotting functions and I want to write a function that creates plots for both of the functions. This function looks like this plotBoth = function(path = NULL){ plotPopulationStats(path) plotInstructionFrequencies(path) } However only whichever instruction I call second gets plotted, while the first instruction only plots a blank window. Below are simplified versions of these functions. plotInstructionFrequencies = function(path

问题 I have a problem with this piece of code: var elements; var current = 100; $(document).ready(function() { elements = = $('.slide').length; iterate(); }); function iterate() { $('.slide').eq(current).hide().queue( function() { if (++current >= elements) { current = 0; } $('.slide').eq(current).show(); $(this).dequeue(); } ); // Call this function again after the specified duration setTimeout(iterate, 1000); } What I'm trying to do is iterate all elements with 'slide' class but I have a problem

问题 I am having issues at the moment with the scope of certain variables within my XSLT document, here is the section of code in question: <xsl:for-each select="all/courses/allcourses/course"> <a> <xsl:attribute name="href">javascript:void(0)</xsl:attribute> <xsl:attribute name="onclick">javascript:transform('<xsl:value-of select="c_code"/>');</xsl:attribute> <xsl:value-of select="c_title"/> </a> <br/> <br/> <course code="{c_code}"> <strong> Enrolled: </strong> <xsl:variable name=

问题 here is my plugin activation code $classified_category_name = 'classified'; $credit_table_name = 'credits'; $credit_table_version = 0.1; register_activation_hook(__FILE__, 'LBH_Classifieds_Activate'); function LBH_Classifieds_Activate() { global $wpdb; global $classified_category_name; global $credit_table_name; global $credit_table_version; $table_name = $wpdb->prefix . $credit_table_name; if($wpdb->get_var("SHOW TABLES LIKE '$table_name'") != $table_name) { $sql = "CREATE TABLE " . $table

问题 I would like to ask, What would be the most suitable scope for my upload photo service in Grails ? I created this PhotoService in my Grails 2.3.4 web app, all it does is to get the request.getFile("myfile") and perform the necessary steps to save it on the hard drive whenever a user wants to upload an image. To illustrate what it looks like, I give a skeleton of these classes. PhotoPageController { def photoService def upload(){ ... photoService.upload(request.getFile("myfile")) ... } }

问题 I understand that there is global scope, and additionally nestable functional scope . But are there any other types of scopes or closures in Javascript? While we're on the topic, what's the difference between a scope, and a closure? 回答1: A closure is a stack of visible scopes. Let's say you have the following code: var v1; function a() { var v2; function b() { var v3; function c() { var v4; } return c; } return b(); } var f = a(); c is a function that has 4 visible scopes: its own scope

问题 For some reason i'm loosing access to my variables inside the switch statement, I am not allowed to use any global variables. import java.util.Scanner; public class Projet { public static void main(String[] args) { String clef="vide"; Scanner in = new Scanner(System.in); showMenu(in); in.close(); } Main method is kept as clean as possible ... calling the menu just once. public static void showMenu(Scanner in){ System.out.printf("******************************************%n" + "* Choisissez