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Pass Arguments from One Function to Another Without Calling It

I'm trying to get either options or, ideally, dynamicTable passed from initializeTable to the applyTableFilters function and I'm having problems getting the expected values. I'm using List.js to make a table dynamic and I need to pass or recreate the dynamicTable object so I can go ahead and use it to filter the table.
Here is the function that creates the List.js object from the HTML table:
function initializeTable(options) { // initializes table to be dynamic using List.js functions
var dynamicTable = new List("table-content", options);
dynamicTable.on("updated", function (list) { // writes a message to the user if no results are found
if (list.matchingItems.length == 0) {
document.getElementById("no-results").style.display = "block";
}
else {
document.getElementById("no-results").style.display = "none";
}
});
console.log(dynamicTable);
console.log(options);
console.log(arguments.length);
applyTableFilters.bind();
}
I've tried different methods to pass the variables to the function below. I tried .call, applyTableFilters(args), and .apply, but the problem is that I do not want the function to execute from inside here, only when the click event from the button goes off (not shown in these functions).
This is the function I want to pass the object to and proceed to make the filter functions using it:
function applyTableFilters(dynamicTable) {
var form = document.getElementById("filter-form");
//console.log(options);
//var dynamicTable = new List("table-content", options);
console.log(dynamicTable);
var filters = form.querySelectorAll('input[type="checkbox"]:checked');
dynamicTable.filter(function (item) {
console.log(item);
console.log(item._values);
if (item.values().id == 2) {
return true;
}
else {
return false;
}
//var filterStrings = [];
//console.log(filters);
//for (var i = 0; i < filters.length; i++) {
// var filterVal = filters[i].value;
// var filterString = "(" + item.values().column == filterVal + ")"; // filterVal.contains(item.values().column) ||
// filterStrings.push(filterString);
// console.log(filterVal);
// console.log(filterString);
//}
//console.log(filterStrings);
//var filterString = filterStrings.join(" && ");
//console.log(filterString);
//return filterString;
});
}
I've used:
applyTableFilters.bind(this, dynamicTable/options);
applyTableFilters.bind(null, dynamicTable/options);
applyTableFilters.bind(dynamicTable/options);
Switching between the two since I don't need both passed if one ends up working, etc. I always get a mouse event passed in and that's not even the right type of object I'm looking for. How can I get the right object passed? Also all the values in the first function are not empty and are populated as expected so it's not the original variables being undefined or null. Thanks in advance.

From your initializeTable function return a function that wraps the applyTableFilters function with the arguments you want.
Then assign the returned function to a var to be executed later.
function initializeTable(options) {
var dynamicTable = new List("table-content", options);
// other stuff
return function () {
applyTableFilters(dynamicTable)
}
}
// other stuff
var applyTableFiltersPrep = initializeTable(options)
// later, when you want to execute...
applyTableFiltersPrep()
JSFiddle example

ext js - create custom function with passed parameters

Just a warning, this is my first ExtJS project.
I have two stores loaded from a webserver successfully.
Store containing positions
Store containing marketData
I've created a third store to hold all of my results.
Now I want to go through each position, find the market data record associated, and run a simple calculation.
I have done this successfully all on the event of clicking a button, but I want to separate out the function of doing the actual calculation... passing in parameters.
For now just to get the concept working I created a function called 'sayHello', but I am getting an error stating... ReferenceError: sayHello is not defined.
Can someone point out what I am doing wrong to create this custom function?
Thanks!
my controller...
Ext.define('ExtApplication1.view.clientdetails.clientdetailsController', {
extend: 'Ext.app.ViewController',
alias: 'controller.clientdetails-clientdetails',
onClickCalculate: function () {
console.log('calculation button was hit');
var targetGrid = Ext.getCmp('positionsGridID');
var positionsStore = targetGrid.store;
var marketDataGrid = Ext.getCmp('marketsGridID');
var marketDataStore = marketDataGrid.store;
var calculatedPositionsDataGrid = Ext.getCmp('calculatedPositionsGridID');
var calculatedPositionsDataStore = calculatedPositionsDataGrid.store;
console.log(calculatedPositionsDataStore);
positionsStore.each(function (record) {
console.log('the details for the whole position');
console.log(record);
var bbSymbol = record.get('BBSymbol');
var singleRecord;
marketDataStore.each(function (record) {
var cycleBBSymbol = record.get('BBSymbol');
if (cycleBBSymbol === bbSymbol){
singleRecord = record;
return false;
}
});
console.log('position I am evaluateing is ' + bbSymbol);
console.log('market data found for ' + singleRecord.get('BBSymbol'));
console.log(singleRecord);
//debugger;
var lastPrice = singleRecord.get('Last_Price');
var settle = singleRecord.get('Px_Settle');
var qty = record.get('Quantity');
var marketName = record.get('Description');
var pnl = (lastPrice - settle) * qty;
console.log(pnl);
calculatedPositionsDataStore.add({
BBSymbol: bbSymbol,
Description: marketName,
Quantity: qty,
CalcPLSett: pnl
});
sayHello(singleRecord);
}, this);
},
sayHello: function (singleRecord) {
alert('hello');
alert(singleRecord);
}
});

You get this error because you're out of the scope of the ViewController.
In
positionsStore.each(function (record) { ...}
You are in the store scope, but the sayHello function is in the ViewController scope.
Assign the ViewController's scope to a variable, should solve your problem:
onClickCalculate: function () {
console.log('calculation button was hit');
var me = this; //NEW LINE
var targetGrid = Ext.getCmp('positionsGridID');
var positionsStore = targetGrid.store;
And then use it in the positionsStore.each function :
me.sayHello(singleRecord)

How to declare instance of a class within a instance of class?

I am making a simple hmtl/js game. I'd like to have all the data of the Game in DataofGame. It is like tennis, it is simpler than tennis: there is only set and match. changeinSet is called on click.
But I think i have a problem with private variable so it doesn't work.
Uncaught TypeError: Cannot read property 'WordsoftheGame' of undefined
//Added
document.getElementById('playboutton').addEventListener('click', newGame);
function newGame() {
var DataofGame = new newGameData();
}
// New game
function newGameData() {
this.pointTeam1 = 0;
this.pointTeam2 = 0;
this.WordsoftheGame = ShuffleListe();
this.ASet = new aSet();
}
//How the set is manage ********************
function aSet() {
var oneWord = DataofGame.ListeMot;
// display the word and delete it from the list
document.getElementById('jouer').innerHTML = oneWord[0];
DataofGame.WordsoftheGame.shift();
this.turn = true;
this.score = 0;
}
function changeinSet() {
DataofGame.ASet.score += 1;
//This is the other team's turn:
DataofGame.ASet.turn = !DataofGame.ASet.turn;
};
//shuffle liste
ListOfWords = ['Artiste', 'Appeler', 'Cheval', 'Choisir', 'Ciel', 'Croire', 'Dormir'];
function ShuffleListe() {
data = shuffle(ListOfWords);
return data;
}

function newGameData(){
this.pointTeam1=0;
this.pointTeam2=0;
this.WordsoftheGame= ShuffleListe();
this.ASet=new aSet();
}
//How the set is manage ********************
function aSet(){
var oneWord=DataofGame.ListeMot;
// display the word and delete it from the list
document.getElementById('jouer').innerHTML=oneWord[0];
DataofGame.WordsoftheGame.shift(); // << DataofGame not assigned yet
this.turn=true;
this.score=0;
}
Here when you're accessing DataofGame, it's not yet assigned because you're inside the constructor when calling aSet().
What you want to achieve is not completely clear, but if it's adding an ASet method to your object, you could write something like this:
function newGameData(){
this.pointTeam1=0;
this.pointTeam2=0;
this.WordsoftheGame= ShuffleListe();
this.ASet = function() {
// your code
};
}
NB your coding style for names is a bit messy, you should use uppercases consistently. The usage is to start constructor names with uppercases, the rest in lower cases.

You can let the function return an object with the data or just set the object.
function newGameData(){
return {
pointTeam1 : 0,
pointTeam2 : 0,
WordsoftheGame : ShuffleListe(),
ASet : new aSet()
}
}
But I would recommend to search for how to work with objects in javascript. Maybe this helps:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript

Multiple Timers with setTimeInterval

I am facing a problem with setInterval being used in a loop.
I have a function subscribeFeed( ) which takes an array of urls as input.
It loops through the url array and subscribes each url to getFeedAutomatically() using a setInterval function.
so if three URL's are there in the array, then 3 setInterval's will be called.
The problem is
1)how to distinguish which setInterval is called for which URL.
2)it is causing Runtime exception in setInterval( i guess because of closure problem in javascript)
//constructor
function myfeed(){
this.feedArray = [];
}
myfeed.prototype.constructor= myfeed;
myfeed.prototype.subscribeFeed =function(feedUrl){
var i=0;
var url;
var count = 0;
var _this = this;
var feedInfo = {
url : [],
status : ""
};
var urlinfo = [];
feedUrl = (feedUrl instanceof Array) ? feedUrl : [feedUrl];
//notifyInterval = (notifyInterval instanceof Array) ? notifyInterval: [notifyInterval];
for (i = 0; i < feedUrl.length; i++) {
urlinfo[i] = {
url:'',
notifyInterval:5000,// Default Notify/Refresh interval for the feed
isenable:true, // true allows the feed to be fetched from the URL
timerID: null, //default ID is null
called : false,
position : 0,
getFeedAutomatically : function(url){
_this.getFeedUpdate(url);
},
};
urlinfo[i].url = feedUrl[i].URL;
//overide the default notify interval
if(feedUrl[i].NotifyInterval /*&& (feedUrl[i] !=undefined)*/){
urlinfo[i].notifyInterval = feedUrl[i].NotifyInterval;
}
// Trigger the Feed registered event with the info about URL and status
feedInfo.url[i] = feedUrl[i].URL;
//Set the interval to get the feed.
urlinfo[i].timerID = setInterval(function(){
urlinfo[i].getFeedAutomatically(urlinfo[i].url);
}, urlinfo[i].notifyInterval);
this.feedArray.push(urlinfo[i]);
}
}
// The getFeedUpate function will make an Ajax request and coninue
myfeed.prototype.getFeedUpdate = function( ){
}
I am posting the same on jsfiddle
http://jsfiddle.net/visibleinvisibly/S37Rj/
Thanking you in advance

After some prototyping i found a answer ,which has the answer,move the closure outside
function myclass(){
}
myclass.prototype.funone= function(){
var counter =0;
var timerID;
timerID = setInterval( function(){
alert(counter++);
},1000);
}
myclass.prototype.funtwo= function(){
var timerID2;
var counter2 =50;
timerID2 = setInterval( function(){
alert(counter2++);
},2000);
}
myclass.prototype.funthree = function( ){
var urlArray =["google.com","yahoo.com"];
var timeArray =[15000,6000];
var timerID ;
for(var i=0;i<2; i++){
var url = urlArray[i];
var timerinterval = timeArray[i];
timerID = this.register( url,timerinterval);
}
}
myclass.prototype.register = function(url,timerInterval){
var myUrl =url;
var myTimer = timerInterval;
var timerID = setInterval( function(){
alert(myUrl+"with"+ myTimer);
},myTimer);
}
var m = new myclass( );
m.funthree( );
http://jsfiddle.net/visibleinvisibly/Q4SBG/13/
The move the index binding from the setInterval and pass the url and time interval.
It works perfectly

You might want to have a look at this answer (under "The this variable" at the bottom) about what the this value means.
The error in your code may have something to do with using a counter in a loop and creating closures depending on the counter. The simplest way to create such closures is.
for(i=0;i<len;i++){
object.myCallback = (function(counter){
return function(){
doSomethingWith(counter);
}
}(i));
}
When creating closures on the fly like that you should be careful not dragging large or large amounts of variables into the closure scope. The link above and code below shows how to do this safely.
I've changed some of the code to make it simpler and not copy stuff that doesn't need to be copied, the setInterval is setTimeout so it only does it once but it's the same idea.
//constructor
function MyFeed(){
this.feedArray = [];
}
MyFeed.prototype.subscribeFeed =function(feedUrl){
var i=0,urlInfo=[];
feedUrl = (feedUrl instanceof Array) ? feedUrl : [feedUrl];
for (i = 0; i < feedUrl.length; i++) {
feedUrl[i].isEnable=true;
feedUrl[i].called=false;
feedUrl[i].position=0;//not sure what this is supposed to do
//Set the interval to get the feed.
feedUrl[i].timerID = setTimeout(this.closures//changed this to timeout
.getFeedUpdate(this)
,feedUrl[i].notifyInterval||100//changed default value
);
this.feedArray.push(feedUrl[i]);
}
};
// The getFeedUpate function will make an Ajax request and coninue
MyFeed.prototype.getFeedUpdate = function( index ){
console.log("in getFeedUpdate, this is now:",this);
console.log("my feed url object:",this.feedArray[index].url);
};
//limit closure scope, define closure creators here
MyFeed.prototype.closures={
//this.closures.getFeedUpdate(this)
// will return a closure that calls this.getFeedUpdate
// with correct parameters
getFeedUpdate:function(me){
var index = me.feedArray.length;
return function(){
me.getFeedUpdate(index);
};
}
};
//code to test adding single feed
var mf = new MyFeed();
mf.subscribeFeed({
url:"I am last",
notifyInterval:1000
});
//add another single feed
mf.subscribeFeed({
url:"first.com"
});
//and another
mf.subscribeFeed({
url:"second.com"
});
//and add some more feeds in an array of feeds
mf.subscribeFeed([
{
url:"third"
},
{
url:"fifth"
},
{
url:"no, I am last",
notifyInterval:1500
}
]);
Try FireFox with the FireBug plugin or Chrome and press F12 to see the console, when the log statements log something you can click on it to see the details of the logged item. Very helpful to log objects like this or simple values like index

Can I create a custom event in Javascript for an object I created?

Assume I have an object with a member function that returns itself:
/* -- Object 1 -- */
function Object1(){
this.me = new Image(10,10);
this.me.src = "someImgUrl.jpg";
this.publish = function(){
return this.me;
}
}
In production:
var Obj1 = new Object1();
document.body.appendChild( Obj1.publish() );
Now, suppose I wanted to create an event that fires when the object's publish() method is called, but after the image is returned (something akin to an "onPublished()" event). Say, to to change the image dimensions to 100x100. How would I create it, and where would I "attach" it?
If I'm not being clear enough, please let me know. This is the simplest demo I could think of.

A simple example:
function Object1() {
'use strict';
this.me = new Image(10, 10);
this.me.src = "someImgUrl.jpg";
this.publish = function() {
if (typeof this.onPublish === "function") {
setTimeout(this.onPublish, 1);
}
return this.me;
};
}
var Obj1 = new Object1();
Obj1.onPublish = function() {
// do stuff
};
Obj1.publish();

Alternatively, you can use some 3rd party framework (such as bob.js) to define custom events on your objects. There are two approaches, but I will show only one:
var DataListener = function() {
var fire = bob.event.namedEvent(this, 'received');
this.start = function(count) {
for (var i = 0; i < count; i++) {
fire(i + 1);
}
};
};
var listener = new DataListener();
listener.add_received(function(data) {
console.log('data received: ' + data);
});
listener.start(5);
// Output:
// data received: 1
// data received: 2
// data received: 3
// data received: 4
// data received: 5