We Keep Coding

Can't trigger a function in Vue js

This is my JS code
getItemData:function(e){
var id = e.target.getAttribute('data-id');
var uom = e.target.options[e.target.options.selectedIndex].dataset.uom;
var uomId = e.target.options[e.target.options.selectedIndex].dataset.uomid;
if(uomId == null || uom == null){
$('#uom_item'+id).html('<option value="" selected></option>');
}
this.GetItemTotalAmount(id);
this.getItemGroupUOM(id);
this.getVatStructure(id);
},
getVatStructure:function (id)
{
var trans_sub_type = $('#trans_sub_type').val();
var prod_type = $('#product_type').val();
var hsCode = $('#hs_code'+id).val()
var defaultVatRate = $('#default_vat_rate_id'+id).val()
$.ajax({
url:'get-vat-structure-by/item',
method:'get',
data:{'tranSubType':trans_sub_type,'prod_type':prod_type,'hs_code':hsCode,'defaultVatRate':defaultVatRate},
success:function(res){
// console.log(res);
$('#vat_structure_rate'+id).html(res.result);
if (!res.isTrue)
{
$('#vat_item'+id).val(null);
$('#vat_amount_item'+id).val(null);
}
$('#vat_structure_rate'+id).trigger("change");
console.log('trg');
},
error:function(err){
console.log(err);
}
});
},
getVatData:function (e)
{
console.log('inside');
var id = e.target.getAttribute('data-id');
var vat = e.target.options[e.target.options.selectedIndex].dataset.vat;
$('#vat_item'+id).val(vat);
this.GetItemTotalAmount(id);
}
I want to trigger getVatData() which is an on change function declared in HTML as #change="getVatData" function from getVatStructure function.
How can I do that. I have tried the following but now working.

javascript DOM object (window) extended property is null on page reload after being idle

I have a custom extended property attached to the window object in JavaScript as follows:
Community.js
(function (window, document, $) {
'use strict';
var containerScrollPositionOnHideList = [];
var scrollToTopOnShowContainerList = [];
var userProfileInfo = {};
window.Community = $.extend({
//init
init: function () {
var Site = window.Site;
Site.run();
this.enableHideShowEventTrigger();
},
setUserInfo: function (userObj) {
if (UtilModule.allowDebug) { debugger; }
window.localStorage.setItem('userInfo', JSON.stringify(userObj));
var d = new $.Deferred();
$.when(this.initUserProfile(userObj.UserId)).done(function () {
d.resolve("ok");
});
},
getUserInfo: function () {
var userJson = window.localStorage.getItem('userInfo');
var userObj = JSON.parse(userJson);
return userObj;
},
})(window, document, jQuery);
The problem is that this extension property window.Community is null in certian scenarios when i refresh the page which i am going to describe below along with flow of code.
and here is a module in JavaScript to force reload scripts even if they are cached every time the page is refreshed as my code heavily depends on javascript calls so I just enabled it to make sure while I am still writing the code page reloads every time, the code is below as follows:
Util.js
var UtilModule = (function () {
var allowDebug = false;
var currentVersion = 0;
var properlyLoadScript = function (scriptPath, callBackAfterLoadScript) {
//get the number of `<script>` elements that have the correct `src` attribute
//debugger;
var d = $.Deferred();
$('script').each(function () {
console.log($(this).attr('src'));
});
if (typeof window.Community == 'undefined') {
//debugger;
console.log('community was undefined till this point');
//the flag was not found, so the code has not run
$.when(forceReloadScript(scriptPath)).done(function () {
callBackAfterLoadScript();
d.resolve("ok");
});
}
else {
console.log('Community loaded already and running now : ' + scriptPath);
callBackAfterLoadScript();
}
return d.promise();
};
var forceReloadScript = function (scriptPath) {
if (UtilModule.allowDebug) { debugger; }
var d = $.Deferred();
initCurrentVersion();
var JSLink = scriptPath + "?version=" + currentVersion;
var JSElement = document.createElement('script');
JSElement.src = JSLink;
JSElement.onload = customCallBack;
document.getElementsByTagName('head')[0].appendChild(JSElement);
function customCallBack() {
d.resolve("ok");
}
return d.promise();
};
var enableDebugger = function () {
allowDebug = true;
};
var disableDebugger = function () {
allowDebug = false;
};
var debugBreakPoint = function () {
if (allowDebug) {
}
};
var initCurrentVersion = function () {
if (currentVersion == 0) {
var dt = new Date();
var ttime = dt.getTime();
currentVersion = ttime;
}
};
var getCurrentVersion = function () {
return currentVersion;
};
return {
forceReloadScript,
properlyLoadScript,
enableDebugger,
disableDebugger,
debugBreakPoint,
allowDebug,
getCurrentVersion
};
})();
Note: I have made deferred objects to resolve only when the JSElement.onload has been called successfully. This step was taken just for testing purpose to make sure that I am not missing something before reaching a point to call the method where I am getting an error.
After that the code where I load scripts using UtilModule in my layout file look like as below:
_Layout.cshtml
<script src = "~/Scripts/Application/Modules/Util.js" ></script>
<script>
$.when(
UtilModule.properlyLoadScript('/Scripts/Application/Community.js', () => {
// Community.init() was supposed to be called here but i was still getting the error so i implemented this using promise that is returned from properlyLoadScript and call Community.init() further in .done callback to make sure that script is properly loading till this point.
//window.Community.init();
})
).done(function() {
window.Community.init();
});
</script>
#RenderSection("scripts", required: false)
Now coming to my main file where My index file is executing having (_layout.chsmtl) as parent layout
is
Index.cshtml
#{
ViewBag.Title = "My Blog";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<article id="BlogPage" style="margin: 5px;">
</article>
#section scripts{
<script type="text/javascript">
$(document).ready(function () {
$.when(UtilModule.properlyLoadScript('/Scripts/Application/Modules/Blog.js', () => {
})).done(function () {
BlogModule.init();
});
});
//});
</script>
}
from what I know is that #section scripts is executed only once all the scripts in the layout page are loaded first so seems like a safe place to initialize the code which is dependent on some script in _Layout.HTML file and further enclosed with $(document).ready() for testing just to make sure that this script loads after everything else is loaded already.
Note: I am running all this code in in-cognito mode in chrome so nothing is cached while this code is running
now my Blog.js file looks like as below
var BlogModule = (function () {
var moduleReference = this;
var PageId = "#BlogPage ";
var currentUser;
var BlogPostList = [];
var blogPostInfo = {};
//init
var init = function () {
if (UtilModule.allowDebug) { debugger; }
//This is where the problem happens
console.log(window.Community);
console.log(window.Community.getUserInfo());
currentUser = window.Community.getUserInfo();
initBlogInformation();
//window.Community.registerModule(BlogModule);
if (Object.keys(window.Community.getUserProfileObject()) <= 0) {
$.when(window.Community.initUserProfile(currentUser.UserId)).then(function () {
$.when(initBlogInformation()).done(function () {
//debugger;
console.log(BlogPostList);
window.WidgetManager.populateWidget(PageId, moduleReference);
loadBlogPostWidget();
loadBlogViewWidget();
loadBlogCommentsWidget();
});
});
}
else {
$.when(initBlogInformation()).done(function () {
window.WidgetManager.populateWidget(PageId, moduleReference);
loadBlogPostWidget();
loadBlogViewWidget();
loadBlogCommentsWidget();
});
}
};
var loadBlogIndexMenuWidget = function () {
if (UtilModule.allowDebug) { debugger; }
};
var loadBlogPostWidget = function () {
var widgetOptions = {};
widgetOptions.type = "BlogPostWidget";
widgetOptions.container = PageId + "#BlogPostWidgetContainer";
var settings = {};
settings.UserId = 1;
widgetOptions.settings = settings;
window.WidgetManager.loadWidget(widgetOptions);
}
var loadBlogViewWidget = function () {
var widgetOptions = {};
widgetOptions.type = "BlogViewWidget";
widgetOptions.container = PageId + "#BlogViewWidgetContainer";
var settings = {};
settings.UserId = 1;
widgetOptions.settings = settings;
window.WidgetManager.loadWidget(widgetOptions);
};
var loadBlogCommentsWidget = function () {
var widgetOptions = {};
widgetOptions.type = "BlogCommentsWidget";
widgetOptions.container = PageId + "#BlogCommentsWidgetContainer";
var settings = {};
settings.UserId = 1;
widgetOptions.settings = settings;
window.WidgetManager.loadWidget(widgetOptions);
};
var initBlogList = function () {
$.when(getBlogPosts()).then(function (results) {
if (UtilModule.allowDebug) { debugger; }
BlogPostList = results.Record;
console.log(BlogPostList);
});
};
var getBlogPosts = function () {
if (UtilModule.allowDebug) { debugger; }
var d = new $.Deferred();
var uri = '/Blog/GetBlogPosts?userId=' + currentUser.UserId;
$.post(uri).done(function (returnData) {
if (UtilModule.allowDebug) { debugger; }
if (returnData.Status == "OK") {
BlogPostList = returnData.Record;
BlogPostList.map(x => {
if (UtilModule.allowDebug) { debugger; }
x.UserName = window.Community.getUserProfileObject().UserName;
if (x.Comments != null) {
x.CommentsObject = JSON.parse(x.Comments);
x.CommentsCount = x.CommentsObject.length;
}
});
console.log(returnData.Record);
d.resolve("ok");
} else {
window.Community.showNotification("Error", returnData.Record, "error");
d.resolve("error");
}
});
return d.promise();
};
var initBlogInformation = function () {
//debugger;
var d = $.Deferred();
getBlogPosts().then(getBlogModelTemplate()).then(function () {
d.resolve("ok");
});
return d.promise();
};
//Get Blog Model
var getBlogModelTemplate = function () {
var d = new $.Deferred();
var uri = '/Blog/GetBlogModel';
$.post(uri).done(function (returnData) {
blogPostInfo = returnData.Record;
d.resolve("ok");
});
return d.promise();
};
return {
init: init,
};
})();
The error I have highlighted below
so the problem is in init function of BlogModule which is BlogModule.init() the page is idle for too long and I reload it I get the following error:
cannot call
window.Community.getUserInfo() of undefined implying that community is undefied
after couple of refreshes its fine and the issue doesn't happen unless I change reasonable portion of code for js files to be recompiled again by browser or the browser is idle for too long and I am not able to understand what is triggering this issue.
below is log from console
p.s. error occurs more repeatedly if i refresh page with f5 but happens rarely if i refresh page with ctrl + f5
Please any help would be of great value

Answering my own question, took a while to figure it out but it was a small mistake on my end just fixing the following function in Util.js fixed it for me
var properlyLoadScript = function(scriptPath, callBackAfterLoadScript) {
//get the number of `<script>` elements that have the correct `src` attribute
//debugger;
var d = $.Deferred();
$('script').each(function() {
console.log($(this).attr('src'));
});
if (typeof window.Community == 'undefined') {
//debugger;
console.log('community was undefined till this point');
//the flag was not found, so the code has not run
$.when(forceReloadScript('/Scripts/Application/Community.js')).done(function() {
//debugger;
$.when(forceReloadScript(scriptPath)).done(function() {
callBackAfterLoadScript();
});
d.resolve("ok");
});
} else {
console.log('Community loaded already and running now : ' + scriptPath);
$.when(forceReloadScript(scriptPath)).done(function() {
callBackAfterLoadScript();
});
}
return d.promise();
};

How to trigger a function with multiple Event Handler (change)

I would like to add the condition, that the function is only triggered if both
addEventListener('change', SwitchG) Events are True (=both have changed).
The code which I use currently activates the function already when one of the two has changed.
var hallo = document.getElementById("S131_01");
var hallo1 = document.getElementById("S130_01");
hallo.addEventListener('change', SwitchG);
hallo1.addEventListener('change', SwitchG);
function SwitchG () {
var test1 = document.getElementById("submit");
test1.classList.add("css");
}

You need another variable, which checks if both have been changed and only executes the handler function if both changes already happened:
var hallo = document.getElementById("S131_01");
var hallo1 = document.getElementById("S130_01");
var countChanges = 0; // <-- this tracks changes
hallo.addEventListener('change', SwitchG);
hallo1.addEventListener('change', SwitchG);
function SwitchG () {
countChanges += 1; // <-- count up
if (countChanges >= 2) {
countChanges = 0; // <-- reset (if needed)
var test1 = document.getElementById("submit");
test1.classList.add("css");
}
}
A more robust implementation however, also tracks the elements which changed and ensures a repeating change event from a single element won't succeed to run the handler.
For example with this utility:
function ChangedCounter (minChanges) {
var elements = new Set();
return {
changed(element) {
elements.add(element);
},
clear() {
elements.clear();
},
isReady() {
return elements.size >= minChanges;
}
};
}
You'd write it like this:
var hallo = document.getElementById("S131_01");
var hallo1 = document.getElementById("S130_01");
var countChanges = ChangedCounter(2);
hallo.addEventListener('change', SwitchG);
hallo1.addEventListener('change', SwitchG);
function SwitchG (e) {
countChanges.changed(e.target);
if (countChanges.isReady()) {
countChanges.clear();
var test1 = document.getElementById("submit");
test1.classList.add("css");
}
}

You could create a "state" to store when the both has changed. I've created two variables, halloState and hallo1State. The snippet below shows how it could be done:
var hallo = document.getElementById("S131_01");
var hallo1 = document.getElementById("S130_01");
var halloState = false;
var hallo1State = false;
hallo.addEventListener('change', SwitchG);
hallo1.addEventListener('change', SwitchG);
function SwitchG (e) {
if(e.target.id === "S131_01") halloState = true;
else if(e.target.id === "S130_01") hallo1State = true;
if(halloState && hallo1State){
var test1 = document.getElementById("submit");
test1.classList.add("css");
}
}
.css {
background-color:red;
}
<input id="S131_01" type="text"/>
<input id="S130_01" type="text"/>
<button id="submit">Submit</button>

reaching the btn event outside the revealing patterned applied class

I have an revealing patterned applied class.How can I reach btnMenu event outside of the model
thanks.
MyModel= (function () {
var btnClickEvents = function () {
var btnMenu = $('.btnMenu').on('click', function () {
var date= $(this).attr("data-rezerve-date");
var statu= $(this).attr("data-rezerve-statu");
alert("click"+date+'---'+statu);
});
};
return {
initialize: initialize,
asignValues: asignValues,
getRezervationDateAndStatus: btnClickEvents.btnMenu//how can I reach this function outside of model
};
})();
update
I change my code as u show.and add one return function
MyModel = (function () {
var dt = "";
var statu = "";
var rvalue = {};
var btnClickEvents = function () {
$('.btnMenu').on('click', onBtnMenuClick);
};
function onBtnMenuClick(e) {
dt = $(this).attr("data-rezerve-date");
statu = $(this).attr("data-rezerve-statu");
rvalue.date = dt;
rvalue.statu = statu;
console.log(dt);
}
var getRezervationDateAndStatus = function () {
return rvalue;
};
return {
initialize: initialize,
asignValues: asignValues,
getRezervationDateAndStatus: getRezervationDateAndStatus
};
})();
and after include my module to my web page calling is like this,
MyModel.asignValues(rezervasyonTable,data);
MyModel.initialize();
var result = MyModel.getRezervationDateAndStatus();
console.log(result.date);
bu console log empty.

As you say it is a " revealing" pattern. You could see what you expose. To be able to use this function outside of the module change your code like this:
MyModel = (function () {
var btnClickEvents = function () {
$('.btnMenu').on('click', onBtnMenuClick);
};
function onBtnMenuClick(e) {
var date = $(this).attr("data-rezerve-date");
var statu = $(this).attr("data-rezerve-statu");
alert("click" + date + '---' + statu);
}
return {
initialize: initialize,
asignValues: asignValues,
getRezervationDateAndStatus: onBtnMenuClick
};
})();

JavaScript Anonymous Function and Input Params

I am trying to understand how to properly pass parameters to anonymous functions. It seems like my 'this' is not pointing to where I was hoping it would go. What am I doing wrong?
JSfiddle:
http://jsfiddle.net/Chiliyago/NvGs8/3/
function initUTCDate() {
var $date = new Date();
var $dateUTC = new Date($date.getUTCFullYear(), $date.getUTCMonth(), $date.getUTCDate(), $date.getUTCHours(), $date.getUTCMinutes(), $date.getUTCSeconds());
return $dateUTC;
}
$(function () {
var setUTCDateTime = function (timeType) {
var $input = $(this);
var $d = initUTCDate();
if (timeType == "GMT") {
$input.val($d.toGMTString());
} else {
$input.val("false");
}
};
$('input[data-ucw-currDateTime]').each(setUTCDateTime("GMT"));
});

Try using:
$(function () {
var setUTCDateTime = function (timeType) {
return function () {
var $input = $(this);
var $d = initUTCDate();
if (timeType == "GMT") {
$input.val($d.toGMTString());
} else {
$input.val("false");
}
};
};
$('input[data-ucw-currDateTime]').each(setUTCDateTime("GMT"));
});
DEMO: http://jsfiddle.net/NvGs8/4/