Cannot Read Property “toString” of Undefined – Javascript [closed]

I am attempting to take an array of numbers, convert them to strings (and then a single string) so that I can easily store multiple values in a key:value db (5 2 digit numbers -> one 10 digit …

Undefined when i am returning an Object in Javascript

I’m doing a getter in VueX, and when i’m returning an object for another function, i have “undefined”. getId: (state) => (LotofID, id) => { LotofID.points.map(obj => { …

Why am i getting ‘undefined’ from this JSON object? [closed]

var action=component.get(“c.callCostCatalog”); action.setParams({ wrapperStructure:JSON.stringify(component.get(“v.listStructurePV”)), consumoTotal:component.get(“v.consumTotal”)…

.click() on hidden input button doesn’t work (undefined)

I’ve spent hours and read countless stackoverflows but I can’t get this to work. I’ve got a form (Caldera Form in Wordpress) that has a submit button (in fact it’s an input tag). Via JS I added an …

Im getting an error in my react and rest api app where one of my variables is coming back undefined

thank you for your time if youre reading this, im making a full stack app with react and rest api and im encountering an error as such: TypeError: errors is undefined submit UserSignUp.js:53 …

ES6 modules – imported constants undefined if not in React component

The only similar question I have found is this one but I can’t see how would I have caused a circular dependancy in this case: I have a file exporting constants like so: (choices array version is for …

Highcharts: Cannot read property ‘parts/Globals.js’ of undefined

I am using certain libraries from Highcharts and I get the following error: Uncaught TypeError: Cannot read property ‘parts/Globals.js’ of undefined at map.src.js:31 at map.src.js:22 at map.src.js:…

Typescript – TypeError myclass.myFunction is not a function

I’m facing an issue with the following code. What it basically should do. It should load and parse a given JSON file. And in the RequestListender it should show the ID and the string Hello which is …

How can I determine if a variable is ‘undefined’ or ‘null’?

How do I determine if variable is undefined or null? My code is as follows: var EmpName = $(“div#esd-names div#name”).attr(‘class’); if(EmpName == ‘undefined’){ // DO SOMETHING };