object

问题 I have a 2d array with up to [32][32] entries. And I'd like to convert it from something like this: [ null, null, null, null, null, null, [null, null, null, null, null, null, null, null, null, null, "player1"], [null, null, null, null, null, "player2"] ] to { "6": {"10":"player1"}, "7": {"5":"player2"} } So this would be my array: var gameField = []; gameField[6] = []; gameField[6][10] = "player1"; gameField[7] = []; gameField[7][5] = "player2"; Now I tried to use this: var obj = {} obj =

问题 This question already has answers here : Accessing nested JavaScript objects with string key (33 answers) Closed 6 years ago . I have a lot of troubles with jQuery validate plugin and the only way I could work around it it was by using the .submitHandler property and do some tricks inside it. On of which is checking if the parent of the trigger it's a fieldset and if it has an data-submit-handler attribute it will execute whatever I send there. It would look something like this : <fieldset

问题 I'm trying to understand why declaring a duplicate function after a statement has executed affects it. It's as if JavaScript is reading ALL functions first, regardless of placement/control flow, and then executing console.log expressions. Example: function Question(x, y) { this.getAnswer = function() { return 42; }; }; var tony = new Question('Stack','Overflow'); console.log(tony.getAnswer()); // 42, as expected. // If the following 2 lines are uncommented, I get an error: // function

问题 I am trying to complete a little program. I've got a text file (.txt) to store different data on objects that i've got. The structure of the file is the next (exemples data.txt) : Sedane 2005 195000 Diesel Blue SUV 2013 34000 Fuel Black Each object is made true a class that i've build called Cars. So the 1 line is the type of car, the 2nd the year of built, the 3rd line is the milage, the 4th is the type of fuel, and the 5th line is the color of the car. So basicly i need to open the file,

问题 For example, int x = 10; we say that " x designates an int object which stores 10". But what does "designate" exactly mean? Does it mean x behaves like a label which refers to the whole chunk of memory? 回答1: x is an identifier . There is an int object (i.e. a region of storage) containing the value 10 . The identifier x is associated with that int object. The C standard uses the English word designate to express the relationship between an identifier and the object it identifies. You could

问题 I want to sum the property values of PieData . My expected output is 25515512+916952499 = 942468011 var PieData = [ { value: 25515512, color: "#00a65a", highlight: "#00a65a", label: "Received Fund" }, { value: 916952499, color: "#f56954", highlight: "#f56954", label: "Pending Fund" } ]; Here is the script i have tried: It prints undefined value. var total_value=''; for(var i=0;i<PieData.length;i++){ $.each(PieData[i], function (index, val) { total_value += val.value; }); } alert(total_value);

问题 Introduction I have a Class Persons that contains an array of Person and functions : function Persons() { this.mItems = []; // Array of Objects Person } Persons.prototype = { calculateScores : function() { // Do some stuff } } The Class Person has members and functions : function Person(name) { this.name = name; // Name of the Person this.score = 0; } Person.prototype = { calculateScore : function() { // Do some stuff } } I want that the program does the following things : var persons = new

问题 I'm trying to get this regex lines to work but they don't seem to be working (I can't get it print out "matches". My goal is to read in a string from Scanner and then run this function. If the string has either lower case values OR special characters then I want to call the invalid function and then return NULL. Then in the isValid() method, I'll have it return false and end. if it contains NUMBERS and UPPERCASE characters only i want to return the string as it is so it can do other things. I

问题 this is a basic question, not very advanced, but I am a bit stuck. I am trying to get the first n bytes of a file hosted on s3. I understand the basic building block to the issue. I know how to get the bytes. Here is an example from the AmazonS3 GET /example-object HTTP/1.1 Host: example-bucket.s3.amazonaws.com x-amz-date: Fri, 28 Jan 2011 21:32:02 GMT Range: bytes=0-9 Authorization: AWS AKIAIOSFODNN7EXAMPLE:Yxg83MZaEgh3OZ3l0rLo5RTX11o= Sample Response with Specified Range of the Object Bytes

问题 I have this code class Move { public: Move() { name = ""; type_num = 18; power = 0; accuracy = 0; type = "???"; } Move(string a, int b, int c, int d) { name = a; type_num = b; power = c; accuracy = d; /*lines of code to give type a string variable depending on the value of type_num*/ } private: string name, type; int type_num, power, accuracy; }; class Moveset { public: Moveset() { } private: Move slot1{"MOVE 1", rand() % 18, 10*(rand() % 15 + 1), 5 * (rand() % 11 + 10)}; }; And the compiler