/TypeScript/Property 'value' does not exist on type 'EventTarget & Element'.

Property 'value' does not exist on type 'EventTarget & Element'.

Property 'value' does not exist on type 'HTMLElement'.

document.getElementById() returns the type HTMLElement which does not contain a value property.
The subtype HTMLInputElement does however contain the value property.

So a solution is to cast the result of getElementById() to HTMLInputElement like this:

var inputValue = (<HTMLInputElement>document.getElementById(elementId)).value;
<> is the casting operator in typescript.
See TypeScript: casting HTMLElement: https://fireflysemantics.medium.com/casting-htmlelement-to-htmltextareaelement-in-typescript-f047cde4b4c3

The resulting javascript from the line above looks like this:

inputValue = (document.getElementById(elementId)).value;
i.e. containing no type information.

Source: fireflysemantics.medium.com

Property 'name' does not exist on type 'eventtarget' react

// If you have to use event.target itself, you would have to cast the object:

const { name } = event.target as HTMLButtonElement;

Source: stackoverflow.com

Property 'on' does not exist on type 'HTMLElement'.

To prevent this error you can write:

var plotDiv: any = document.getElementById('myDiv');
plotDiv.on('plotly_relayout', ...
document.getElementById('myDiv') return HTMLElement. This type doesn't contain method
on because this method is added within plotly-latest.min.js. So in order to silence
the typescript warning you can explicity say compile not to check types for plotDiv

Another way is create type definition like:

interface PlotHTMLElement extends HTMLElement  {
  on(eventName: string, handler: Function): void;
}

var plotDiv  = <PlotHTMLElement>document.getElementById('myDiv')
plotDiv.on('plotly_relayout', function() {

});

Property 'value' does not exist on type 'EventTarget & Element'.

(e.target as HTMLButtonElement).value

Property 'attributes' does not exist on type 'eventtarget'

let inputValue = (<HTMLInputElement>event.target).value

Similar codes

5 votes182 views3 answers
Add space between subplots matplotlib
TypeScript
17 votes184 views4 answers
Pygame mouse events
TypeScript
41 votes222 views3 answers
Get last n elements from list java
TypeScript
0 vote173 views2 answers
Count(): parameter must be an array or an object that implements countable
TypeScript
0 vote180 views1 answer
How to get unique names oin array typescript
TypeScript
59 votes509 views6 answers
Sum elements in list python
TypeScript
0 vote170 views2 answers
Vue scrollbehavior typescript
TypeScript
6 votes172 views3 answers
Mongodb count based on array of ids
TypeScript
1 vote176 views1 answer
Remove duplicates from array angular
TypeScript
5 votes174 views2 answers
Lofi hip hop beats to study to
TypeScript