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JAVASCRIPT QUESTIONS

How to fix "Object is possibly undefined"?
How to fix "Object is possibly undefined"?
I wish did fix the issue. You can leave out the if clause if (countries) { ..., it is not necessary.It is the next expression which can be undefined:
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045822
How can one use TensorFlow.js tf.data.generator for remote data sources since generators can't use callbacks
How can one use TensorFlow.js tf.data.generator for remote data sources since generators can't use callbacks
To fix this issue You can pass an async function (or a function returning a Promise) to the generator. It is then okay to use await inside the function (even inside a loop) to handle any asynchronous tasks.Code Sample
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045623
How can I unescape a string from python using javascript
How can I unescape a string from python using javascript
With these it helps So I'm trying to work on passing a url from my backend to my frontend and it has some escaping going on such that by the time the string gets to the frontend it looks something like 34www.test.com34.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045617
How to add days into my date using angular pipe?
How to add days into my date using angular pipe?
To fix this issue I'm trying to add certain amount of days at my date, using pipe. , As per your pipe definition:
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045606
Keydown not firing on page loaded in <object> element
Keydown not firing on page loaded in <object> element
I wish did fix the issue. The problem ended up being that I didn't properly stop the propagation/bubbling of the event. I was calling just KeyboardEvent.stopPropagation() and nothing else. This snippet provided by a coworker fixed it:
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045603
Refetch queries in react-native with graphql
Refetch queries in react-native with graphql
wish help you to fix your issue I'm beginner and i try to learn graphql. I want to create an app which update the data(realtime) from react web app to react native mobile app with graphql. In the web app was easy to refetch query when i pressed the O
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045602
How to execute functions across objects identically to executing the function itself with a this reference
How to execute functions across objects identically to executing the function itself with a this reference
I hope this helps . I am working on a web app that is modular with its root component being the Editor Object. This Editor object handles the creation of multiple components. One of these component objects is the Filebar component which has the abili
TAG : javascript
Date : December 02 2020, 10:46 PM , By : T2d
NGRX Effect withLatestFrom Typescript error ts2345 troubleshooting
NGRX Effect withLatestFrom Typescript error ts2345 troubleshooting
hop of those help? You are using wrong store - you injected in your effects Store where State is guild state and of course user selectors won't work on it. You need to inject Store with User state and use it instead.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045549
Make a checkbox checked if its id is present in an array
Make a checkbox checked if its id is present in an array
fixed the issue. Will look into that further Try this solution {{element.id}}
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045542
Remove disabled class when response code is 1 in each element javascript
Remove disabled class when response code is 1 in each element javascript
I wish this helpful for you So you need to loop over all the elements and check. Easiest way would be to use some.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045530
Creating an input select in an editable form
Creating an input select in an editable form
should help you out In Todo : you call EditForm with status={this.props.status}, this.props.status is undefined and should be this.state.statusIn EditForm : use value instead of defaultValue and the values of the options are not the same as the statu
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045516
How to convert string of ASCII codes to string of characters?
How to convert string of ASCII codes to string of characters?
help you fix your problem Use Spread syntax.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045501
Detect system time and set css animation start time in browser
Detect system time and set css animation start time in browser
this will help I made an example using animation-play-state according to second. This adaptable any specific time.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : Stefanoharo
How can I build a dataTable, with a dropbox filter on top, calculated on backend?
How can I build a dataTable, with a dropbox filter on top, calculated on backend?
Hope this helps I need to change a dataTable to add a dropbox on top of it (not in the header) to filter it. , Found the solution :HTML :
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045464
What needs to be done to make multiple screen support for Javascript happen?
What needs to be done to make multiple screen support for Javascript happen?
may help you . Since Version 66 of Chrome it is possible to use the Presentation API There is a W3C Draft for it since 2019-04The Example at
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045463
How to format a full year date/time
How to format a full year date/time
I wish this helpful for you The Date object isn't "already formatted" - when you pass it in this way its toString() method is invoked and returned as an ECMA-262-compliant string representation based on the information associated with tha instance of
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045453
this.props.match.params passed into child component after authorisation
this.props.match.params passed into child component after authorisation
it helps some times I have recently started building a big project on React using also a Firebase with authentication and I cannot quite understand the relation between the react-router-dom links and React components. , By wrapping withRouter you abl
TAG : javascript
Date : December 02 2020, 10:46 PM , By : Vishvesh
Highcharts: create multiple series grouped my month and year using JSON data
Highcharts: create multiple series grouped my month and year using JSON data
should help you out You can achieve it simply by creating a Date object using different parameters. Instead of the string date parameter new Date('2019-07-07') use year and month as separate parameters like that: new Date(2019, 7).
TAG : javascript
Date : December 02 2020, 10:46 PM , By : hpajaro
JS: Keep variable values for onclick event attached inside for loop
JS: Keep variable values for onclick event attached inside for loop
This might help you You must scope your variables declaring it by the use of let, that way you'll scope it exclusively for that iteration. Avoid to declare a variable like i = 0, bacause that way you create a global variable and it will not work (thr
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045440
Failed prop type. Required prop types are undefined in my redux store
Failed prop type. Required prop types are undefined in my redux store
around this issue So I'm learning react and redux and I get this error in the console whenever I load my page. I'm not sure what it means since my store should be connected properly (as far as I know, but obviously it's not).
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045420
How to not import Vue in main js and store
How to not import Vue in main js and store
should help you out It is not imported twice. It is registered in a namespace in such a way, that all the modules (files) importing it, refer to the same module. Don't worry, it's not imported twice.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045405
Javascript make table with rows and columns given by user and change each cells colour onclick
Javascript make table with rows and columns given by user and change each cells colour onclick
This might help you Add click listener to the document, check if the clicked element is td if yes change the background color of cell.
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045390
How do you fix "ERROR in Path must be a string. Received undefined" in webpack4/copy-webpack-plugin
How do you fix "ERROR in Path must be a string. Received undefined" in webpack4/copy-webpack-plugin
will help you You have passed your options object as a second pattern.Move it outside of the patterns array and pass it as the second parameter instead:
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045385
Protractor Fetching Email with Mail Listener: TypeError: deferred.fulfill is not a function
Protractor Fetching Email with Mail Listener: TypeError: deferred.fulfill is not a function
it fixes the issue The problem seems to be the protractor promise API. Not sure which version of protractor you are using. In any case, as you are using async/await why not use Promise directly instead of relying on Protractor promises?
TAG : javascript
Date : December 02 2020, 10:46 PM , By : rahul nayar
date-time picker bootstrap Tempus Dominus
date-time picker bootstrap Tempus Dominus
it helps some times This plugin does not seem to have very clear documentation of all the requirements nor the specific versions. Assumptions made by me from the site: https://tempusdominus.github.io/bootstrap-4/
TAG : javascript
Date : December 02 2020, 10:46 PM , By : user3045353
How do I get all radio button id's via the name
How do I get all radio button id's via the name
To fix the issue you can do Use each() iteration.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : iamK9
Using d3 in for loop
Using d3 in for loop
seems to work fine The biggest issue that I see is that you are running asynchronous code in a for loop.d3.tsv() is asynchronous and returns a Promise
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045432
Impact an array of objects
Impact an array of objects
around this issue JS won't automatically map an operation over all the array/object elements. You have to loop explicitly.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : danibasauri
JS split string and return index of each split
JS split string and return index of each split
it helps some times Here's a possible implementation based on .exec:
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045320
Javascript/JS - Referring to classes and variables dynamically within a change event loop
Javascript/JS - Referring to classes and variables dynamically within a change event loop
around this issue I'm trying to cut down this list of class change functions to one neat loop using an array for the class names used in the change event. , Got there in the end:
TAG : javascript
Date : December 01 2020, 04:52 PM , By : Viperboy
Query a specific GET field?
Query a specific GET field?
Does that help How can I get just a single field (called "name") from an entry in my AppSync/Dynamo table, for a given "id:"? This is instead of getting the entire row of fields for that 'id' returned to me. I only need the single field. , Try below
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045263
Mapping multiple form inputs of the same name into a JavaScript object
Mapping multiple form inputs of the same name into a JavaScript object
will be helpful for those in need The crux of the problem is that you can't have multiple form fields with the same name. If you do, that's called a "naming collision" which will bust native functionality of an HTML form. But you can use a sort of te
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045252
How can I not to return a field from object in JavaScript?
How can I not to return a field from object in JavaScript?
I wish did fix the issue. The answer depends on the context of your code. If you just want to delete a key-value pair from your object then delete a.randomField will do the trick. You could return a afterwards, but note that this modifies a if it was
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045247
Creating and testing a single Javascript nested function
Creating and testing a single Javascript nested function
it fixes the issue You're currently calling the function but not doing anything with its return value.You can log it to the web console:
TAG : javascript
Date : December 01 2020, 04:52 PM , By : mishu
Formatting server side jQuery Datatable
Formatting server side jQuery Datatable
This might help you The commas for the url's array are because of the default way arrays are processed to strings to be printed into the html in the domYou could join() them yourself using a separator instead
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045217
How to show tooltips onmouseover in p:calendar
How to show tooltips onmouseover in p:calendar
Hope this helps As the comments to your question already hint at, the mouseover event of the p:calendar component is bound to the parent date input text, not the date picker or the individual dates in the date picker.Obviously the solution is to manu
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045210
typescript - calling function at random intervals in ionic
typescript - calling function at random intervals in ionic
it should still fix some issue Can you update your setTimeout(this.myFunction, rand * 1000); function to,
TAG : javascript
Date : December 01 2020, 04:52 PM , By : siwach
Correct way to populate an array from a promise
Correct way to populate an array from a promise
I wish did fix the issue. Using arrow functions would fix that.Plus you don't really need to instantiate a new Person Object, every single time. In Angular, we generally use interfaces for static type checking. So unless you have a very strong reason
TAG : javascript
Date : December 01 2020, 04:52 PM , By : Zwulf
JavaScript Mini-Max Sum - Returns 0
JavaScript Mini-Max Sum - Returns 0
wish helps you Fix your arr.length typos and make sure that the min loop starts at 0 and ends at arr.length - 1 instead of arr.length.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045164
canvas not clearing while radius of circle decreasing..?
canvas not clearing while radius of circle decreasing..?
This might help you You should call beginPath() every time you want to start a new path - that is a new circle. When your circle is so big, the smaller inner circles are also drawn from top down the larger ones - so, they are not visible.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045151
Dynamically Growing Dropdown Component with clickoutside directive
Dynamically Growing Dropdown Component with clickoutside directive
To fix this issue Preventing clicks on the element from bubbling onto document will keep them from triggering click-outside functionality of any other elements in the page. So add a
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045148
MultichoiceField in ModelForm for Django with DB relations
MultichoiceField in ModelForm for Django with DB relations
this one helps. This is my first post ever on Stackoverflow so please ignore mistakes. Before posting I had tried a dozen solutions bun none worked. I have table relations in models for users. I need to create a ModelForm to let customer select multi
TAG : javascript
Date : December 01 2020, 04:52 PM , By : Pascal Simon
React Native "if" statement behaviour? Early exit or full evaluation?
React Native "if" statement behaviour? Early exit or full evaluation?
wish helps you This is Javascript, so yes, it exits when the first condition is true.According to MDN:
TAG : javascript
Date : December 01 2020, 04:52 PM , By : walterg
Call Jquery function on Input tag having data-slider
Call Jquery function on Input tag having data-slider
this will help According to bootstrap-slider doc you have to handle 'slideStop' event. Y've preapred a sample fiddle for you.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : howdihow
How to process negative shifts in Caesars Cipher (Javascript)
How to process negative shifts in Caesars Cipher (Javascript)
seems to work fine Your code only works for positive caesar shifts, because inString.fromCharCode(((prePoint - 65 + shift) % 26) + 65);
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045077
Animating Line position in Konva
Animating Line position in Konva
I hope this helps you . You may need to set initial values for points attribute for a better tween. Also, you are not using the source and target in the Link component. You should use that props for calculating animations.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045044
Why a state is not resolved as a variable in nextjs
Why a state is not resolved as a variable in nextjs
should help you out The issue based on the code you have now, is that you're not passing user down to the Landing component. If you update your home page with the following changes, you're code should work.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : David
How to efficiently evaluate element in javascript array by using reduce function
How to efficiently evaluate element in javascript array by using reduce function
With these it helps You can use a Set to store all the cities from the array and, since a set only has unique entries, the final size of the set will give you the number of distinct cities:
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045034
Google script web app goes blank page after submit
Google script web app goes blank page after submit
around this issue Issue: preventDefault is not called onSubmit. Hence the form is posted to the sandboxed user iframe inside the web-app.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045029
Event for the load-end of dynamically added CSS files through innerHTML
Event for the load-end of dynamically added CSS files through innerHTML
it fixes the issue I don't think there's a built-in "load" event that's fired when all the resources requested by the dynamically added elements are finished loading.You can probably implement this though if you're sufficiently motivated.
TAG : javascript
Date : December 01 2020, 04:52 PM , By : user3045028
How to retrieve some text from a sibling div element in jQuery
How to retrieve some text from a sibling div element in jQuery
hop of those help? You are not trying to get the siblings, you are trying to get the sibling of the parent .links of this.Also you have to prevent the default action of the a element. You can do that by calling preventDefault() on the event object.
TAG : javascript
Date : December 01 2020, 04:50 PM , By : Subodh Sawrav
How to display half star rating in my following custom angular star rating example?
How to display half star rating in my following custom angular star rating example?
hop of those help? To achieve expected result, use below of using two additional divs- one with full star and half star Create two stars with condition to display only when there is 0.5 rating
TAG : javascript
Date : December 01 2020, 04:50 PM , By : Faysal Ali
Angular 8: ternary operation for img src attribute?
Angular 8: ternary operation for img src attribute?
I think the issue was by ths following , it's just [src] in angular, and the {{ }} syntax isn't valid in bindings. Only in interpolation, just access the variables like normal
TAG : javascript
Date : December 01 2020, 04:50 PM , By : AndroMax
Is this proper JS for this J-Query expanding textArea? Is 'this' the same as event.target in JS also?
Is this proper JS for this J-Query expanding textArea? Is 'this' the same as event.target in JS also?
around this issue var a, b; declares 2 variables, it's shorthand for var a; var b;.
TAG : javascript
Date : December 01 2020, 04:50 PM , By : Andrey Schelychev
How to fix user fetching from a collection in discord.js?
How to fix user fetching from a collection in discord.js?
wish helps you The docs say that the parameter should be a snowflake Snowflake Ref From what I can see, you are passing in an array of snowflakes which won't work.
TAG : javascript
Date : December 01 2020, 04:50 PM , By : Mads
Can I create an item id when adding it to a collection?
Can I create an item id when adding it to a collection?
seems to work fine If you are using the Realtime Database of Firebase as suggested by your question tag, you can do it as explained here
TAG : javascript
Date : December 01 2020, 04:50 PM , By : user3044929
Temporarily disable a specific option after it has been selected (in any selector) for all instances of that selector in
Temporarily disable a specific option after it has been selected (in any selector) for all instances of that selector in
With these it helps Let me try to help you. First of all, as mentioned in comments you have to delete onchange handler from loop and you have to make select id unique. (using $i variable). And then after selects had been created you have to handle th
TAG : javascript
Date : December 01 2020, 04:50 PM , By : Emily
Vis.js timeline item align property not working
Vis.js timeline item align property not working
may help you . Works for me, See https://codepen.io/Enirdas/pen/rNaKxOzthe global Option is set to align:'left'.
TAG : javascript
Date : December 01 2020, 04:50 PM , By : user3044890
How to select one element instead of all elements using 'clicked' in a Django for loop
How to select one element instead of all elements using 'clicked' in a Django for loop
it helps some times You need to get particular div with class folder ,so you can use parent() method of jquery ,and get parent element of clicked element , i.e :
TAG : javascript
Date : December 01 2020, 04:50 PM , By : user3044849
How to check if 2 <img> tags contain the same image
How to check if 2 <img> tags contain the same image
I wish this help you basically there are multiple things wrong in your js. First of - shouldn't .card be .frontCard?I got a code which is working as expected, even though it might not be the most beuatiful. Check out the snippet
TAG : javascript
Date : December 01 2020, 04:50 PM , By : user3044827

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