Tag: javascript

Add elements inside Array conditionally in JavaScript

When I try to merge two objects using the spread operator conditionally, it works when the condition is true or false: When I try to use the same logic with Arrays, it only works when the condition is true: If the condition is false an error is thrown: Why is the behaviour different between Array and Object? …

How can I get a input required with vuejs

css html javascript laravel vue.js

I have my chat and I dont want people to send empty message so I would like that my input become required. Thanks for your help. I tried to put “required=’required’” in the input line, I also tried veeValidate but it broke my chat when I use it, I also tried to put “Required = true&#82…

Render react Component from Map Object

javascript reactjs

In reactjs I’m trying to render a component from a Map object. More specifically, on the press of a button I create a new “FormRow” component, and I store it in a javascript Map object for convenience (because I’m gonna to use it later on). Whenever it happens, I want to render the new…

Transform a string from camel case to snake case and vice versa

algorithm javascript string typescript

I would like transform string with uppercase to string with underscore like : And conversely : I use Typescript, but I think for that, there is no difference with the Javascript. Thank’s in advance. Jérémy. Answer

Prevent Bootstrap .table-responsive style from cropping a tooltip

css html javascript responsive-design twitter-bootstrap-3

I am having some problem with Bootstrap’s table-responsive style. I have tried some code here https://codepen.io/arindamx01/pen/gJOqxK to make the full tooltip visible. I have tried without .table-responsive class. Without .table-responsive class it works well: I can see the tooltip by hovering on time.…

Difference between centroid and centerOfMass in turf

javascript turfjs

I need to find the geospatial coordinates of point which is the mean of the distances between all the Features in my GeoJSON dataset. In turf.js both centroid and centerOfMass are presented. The explanation for centerOfMass is that it “takes any Feature or a FeatureCollection and returns its center of m…

React router warning: Received `true` for a non-boolean attribute `exact`

javascript react-router reactjs

I receive console warning during Buttons mapping with prop “exact”: Warning: Received true for a non-boolean attribute exact. If you want to write it to the DOM, pass a string instead: exact=”true” or exact={value.toString()}. I guess there are no mistakes in my code Answer Fixed it wi…

Polling with redux-saga

javascript reactjs redux-saga

I tried to solve polling with the information on this page: https://bigbite.net/polling-with-redux/ The problem I have now is that I see in network that my service gets called too many times. It is called all the time. Should not my delay prevent it to call my fetchStuff in the next round inside while? Should…

TypeError: “this is undefined” When using forEach on member array

angular javascript typescript

I have a class marketData: I would like to define a member function for it, validate(), that checks that the values of the class are set properly. I wrote part of this method to check itemPrices: However, the above gives me a ERROR TypeError: “this is undefined”. I got the exact same error trying …