[Solved] JQuery val(), text() and html() all return an empty String

Question

I have found the solution.
The problem didn’t lie in the code itself but in the program-flow.
Everytime when I click on submit I reload the index.js so my global var radius got overwritten with its default value again since my page reloaded.
Therefore getRadius() has been invoked and actually did overwrite the global val radius but before the page has reloaded again and therefore radius has been overwritten afterwards again with its default value.

Thanks for you help anyway!

Accepted Answer

I have found the solution.
The problem didn’t lie in the code itself but in the program-flow.
Everytime when I click on submit I reload the index.js so my global var radius got overwritten with its default value again since my page reloaded.
Therefore getRadius() has been invoked and actually did overwrite the global val radius but before the page has reloaded again and therefore radius has been overwritten afterwards again with its default value.

Thanks for you help anyway!