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

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

Similar codes

0 vote272 views1 answer
Ionic add next button slides
TypeScript
0 vote279 views1 answer
Ips in range typescript
TypeScript
2 votes277 views1 answer
Google Sheets How to Count business Days Between Two Dates
TypeScript
1 vote281 views2 answers
How to delete firebase collection
TypeScript
0 vote297 views2 answers
Rails precompile assets in a directory
TypeScript
-1 vote275 views1 answer
Creating lists in C
TypeScript
0 vote287 views1 answer
Get_refreshed_fragments too long to load
TypeScript
0 vote307 views1 answer
How does a consumer commit offsets in Kafka? it directly commit the offset in Zookeeper it directly send a message to the __consumer_offset it interact with the Group coordinator None
TypeScript
4 votes290 views5 answers
Angular refresh page without reloading
TypeScript
0 vote286 views1 answer
Pass arguments to viewmodel android kotlin using koin
TypeScript